# QSFP28 100G SR4 optic price tracker As of Nov 5, 2026, QSFP28 100G SR4 optic on eBay: used listings start at $30.00 (median $60.00); new from $28.80; refurb from $215. Is $28.80 a good Black Friday price for the QSFP28 100G SR4 optic? Across the 12 days we checked since Oct 24, its lowest eBay listing was $25.64 and the median listing was $83.92. Today's low is 12% above that low. [Black Friday check →](https://sharpest.ai/black-friday) [See the cheapest QSFP28 100G SR4 optic on eBay (new) — $28.80 →](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C327435947849%7C0) [New from **$28.80**](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C327435947849%7C0)[Used from **$30.00**](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C127282015401%7C0) Far below the other listings: check the seller, photos and condition before buying. [Compare new on Amazon →](https://www.amazon.com/s?k=qsfp28+100g+sr4&tag=sharpestai-20) As an eBay Partner and Amazon Associate we earn from qualifying purchases, at no cost to you. Cheapest now **$28.80**[See it on eBay →](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C327435947849%7C0) Lowest now**$28.80** Typical (median)**$86.25** 7 days** ▲ 12.5%** 30 days** —** Live listings**145Buy or wait?** Fair price: today's low is within 2% of its 18-day average. ## Cheapest QSFP28 100G SR4 optic listings right now | | Listing | Condition | Price + ship | | |---|---|---|---|---| | | FS QSFP28-SR4-100G 850nm 100m Cisco Compatible Optical Transceiver LAST ONE Buy It Now offers | New | $28.80 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C327435947849%7C0) | | | ERICSSON Avago AFBR-89CDDZ-ER1 100Gb-SR4 QSFP28 100G SR MPO Transceiver Module Buy It Now offers | New | $28.99 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C326607563866%7C0) | | | ProLabs QSFP-100G-SR4-C 100G QSFP28 850nm 100m MPO Transceiver FREE SHIPPING 🚚 Buy It Now offers | Used | $30.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C127282015401%7C0) | | | Dell Technologies Q28-100G-SR4-G2 QSFP28 100G SR4 Transceiver Buy It Now | New | $30.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C307215504395%7C0) | | | Precision PRE-QSFP28-SR4-ARST \| QSFP28 SR4 ARST 100G 850nm Transceiver Buy It Now offers | Used | $30.73 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C406688365677%7C0) | | | New Dell QSFP28-100G-ESR4 0YKMH7 Buy It Now | New | $31.19 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C396837430017%7C0) | | | FS QSFP28-SR4-100G Buy It Now | Used | $31.29 sale: was $24.99, −10% | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C257391287435%7C0) | | | 10Gtek QSFP28-100G-SR4 100GBASE-SR4 QSFP28 Optical Transceiver Module Buy It Now | Used | $31.60 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C318705435416%7C0) | | | Finisar FTLC9558REPM 100G SR4 850nm Parallel MPO-12 QSFP28 Transceiver Buy It Now offers | Used | $31.63 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C278384436179%7C0) | | | FS 100GBASE-SR4 QSFP28 850nm 100m 100Gbps MMF Transceiver Module QSFP-SR4-100G Buy It Now offers | Used | $31.99 sale: was $39.99, −20% free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C267713761577%7C0) | | | 2x Luma Optics QSFP-100G-SR4-LU QSFP28-SR4 850nm 100m Transceiver Module Buy It Now | Used | $33.90 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C940045156110%7C0) | | | Arista QSFP-100G-SR4 100GbE QSFP28 Optical Transceiver Module P/N: XVR-10067-20 Buy It Now | Used | $33.99 sale: was $36.92, −8% free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C377565095461%7C0) | | | Gigamon 100G Base QSFP28 SR4 850NM Q28-502 TR-FC85S-NGM Buy It Now | Used | $34.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C176343695266%7C0) | | | Dell Technologies Q28-100G-SR4-G2 QSFP28 100G SR4 Transceiver Buy It Now offers | Open box | $34.38 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C157836159772%7C0) | | | FS QSFP28-SR4-100G 100G QSFP28 SR4 Transceiver Module Refurbished Buy It Now | Used | $34.65 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C298229481631%7C0) | | | NEW Sealed Dell 04WGYD 100G QSFP28 SR4 Q28-100G-SR4-85C FTLC9555REPM3-E5 Buy It Now offers | New | $34.99 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C840083872064%7C0) | | | NEW Dell 014NV5 100G QSFP28 SR4 Transceiver Q28-100G-SR4-G2 Buy It Now offers | New | $34.99 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C840083895269%7C0) | | | Cisco QSFP-100G-SR4-S 100GBASE SR4 QSFP Transceiver Module Buy It Now offers | Used | $35.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C117414224924%7C0) | | | ProLine QSFP-100G-SR4-S-PRO 100GBASE-SR4 QSFP28 850nm MTP/MPO-12 MMF Transceiver Buy It Now offers | Used | $36.95 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C305408622695%7C0) | | | FS QSFP28-SR4-100G DE, Optical Transceiver Module Buy It Now offers | Used | $39.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C188091500093%7C0) | | | ENTAGON QSFP28-SR4-JNP 100G 850NM 100M MMF DOM Optical Transceiver Buy It Now offers | Used | $39.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C188091503250%7C0) | | | HPE X150 100G QSFP28 MPO SR4 100M MM XCVR TRANSCEIVER JL274A Buy It Now offers | Used | $39.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C284687597025%7C0) | | | FS QSFP28-SR4-100G 100GBASE-SR4 QSFP28 850nm 100m DOM MTP/MPO-12 MMF Transceiver Buy It Now | Used | $39.39 sale: was $41.26, −39% | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C206224167295%7C0) | | | Infinera TOM-100G-Q-SR4 100G QSFP28 Transceiver Module 130-0334-002 Buy It Now offers | Used | $39.99 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C336423279177%7C0) | | | Dell EMC 14NV5 Q28-100G-SR4-G2 100GbE QSFP28 850nm MPO Optical Transceiver Buy It Now offers | New | $39.99 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C377621744135%7C0) | | | FS 100G SR4 TRANSCEIVER MODULES QSFP28 OPTICAL NETWORK DATA TRANSMISSION 100 Buy It Now offers | New | $40.00 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C128012284651%7C0) | | | Arista XVR10067-20 QSFP-100G-SR4 QSFP28 100m MMF 850nm MPO Transceiver Buy It Now offers | Used | $40.36 sale: was $44.95, −25% | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C278396089008%7C0) | | | NEW OPSTRAN QSFP28-100G-SR4 850nm 100m Buy It Now | New | $40.50 free ship | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C236060769509%7C0) | | | 4x FS QSFP28-SR4-100G 100G QSFP28 850nm 100m Optical Transceiver Module / USED Buy It Now offers | Used | $40.80 sale: was $41.26, −22% | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C327383191300%7C0) | | | FS QSFP28-SR4-100G 100G QSFP28 850nm 100m Cisco Compatible Optical Transceiver Buy It Now offers | Open box | $41.06 | [View on eBay](https://sharpest.ai/go/homelab/qsfp28-100g-sr4/v1%7C358638828161%7C0) | ## Get a price-drop alert We'll email you when a QSFP28 100G SR4 optic listing hits your price. One email per drop, unsubscribe in one click. By continuing you agree to our [Terms](https://sharpest.ai/terms) and [Privacy Policy](https://sharpest.ai/privacy). ## Where today's prices sit 145 live listings by price (item + shipping). The highlighted bar is the cheapest band. ## Price history typical asking price lowest asking price ## Market read Of 145 Buy It Now listings, 78 used (from $30.00), 66 new (from $28.80), 1 refurb (from $215). 75% ship free; the rest add $6.83 shipping at the median. The middle half of asking prices runs $49.00 to $225, so anything under $49.00 is in the cheapest quarter. Lowest we have recorded since 2026-10-19: $25.64 on 2026-10-29; today's cheapest is 12% above that. Asking prices of US eBay listings including shipping, as of 2026-11-05 (checked twice a day); we earn a commission on purchases through these links; parts, broken units and accessories are filtered out. [How we price](https://sharpest.ai/about#method). ## Head to head - [QSFP28 100G SR4 optic vs 10G SFP+ DAC 1m](https://sharpest.ai/homelab/vs/qsfp28-100g-sr4-vs-sfp-plus-dac-1m) - [QSFP28 100G SR4 optic vs SFP28 25G SR optic](https://sharpest.ai/homelab/vs/qsfp28-100g-sr4-vs-sfp28-25g-sr) ## Compare - [10GBASE-SR SFP+ transceiver](https://sharpest.ai/homelab/sfp-plus-10g-sr) $5.89 - [10G SFP+ DAC 1m](https://sharpest.ai/homelab/sfp-plus-dac-1m) $13.13 - [10G SFP+ DAC 3m](https://sharpest.ai/homelab/sfp-plus-dac-3m) $14.50 - [SFP28 25G SR optic](https://sharpest.ai/homelab/sfp28-25g-sr) $32.95 - [QSFP+ 40G SR4 optic](https://sharpest.ai/homelab/qsfp-40g-sr4) $7.99 --- As of 2026-11-05. Canonical page: https://sharpest.ai/homelab/qsfp28-100g-sr4