Personal care & health: cheapest per unit, Amazon vs eBay

For things where the brand matters less than the price per ounce or per item, we rank every matching listing by price per unit, ignoring brand. 488 items; last Amazon check 2026-11-12 23:42:58 UTC.

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Personal care & health

ItemAmazoneBay
Hand soap refill Amazon $0.070/fl oz → eBay $0.13/fl oz →
Deodorant Amazon $0.74/oz → eBay $1.16/oz →
Body wash Amazon $0.20/fl oz → eBay $0.25/fl oz →
Bar soap Amazon $0.67/bar → eBay $2.00/bar →
Mouthwash Amazon $0.16/fl oz → eBay $0.25/fl oz →
Cotton swabs Amazon $0.005/swab → eBay $0.011/swab →
Cotton balls Amazon $0.007/ball → eBay $0.060/ball →
Shaving cream Amazon $0.27/oz → eBay $0.75/oz →
Contact lens solution Amazon $0.75/fl oz → eBay $1.02/fl oz →
Manual toothbrushes Amazon $1.45/brush → eBay $0.75/brush →
Hand sanitizer Amazon $0.18/fl oz → eBay $0.50/fl oz →
Adhesive bandages Amazon $0.090/bandage → eBay $0.074/bandage →
Baby wipes Amazon $0.010/wipe → eBay $0.015/wipe →
Diapers size 4 Amazon $0.095/diaper → eBay $0.19/diaper →
Multivitamin Amazon $0.058/tablet → eBay $0.065/tablet →
Melatonin Amazon $0.028/tablet → eBay $0.040/tablet →
Vitamin C 1000 mg Amazon $0.045/tablet → eBay $0.040/tablet →
Creatine monohydrate Amazon $0.62/oz → eBay $0.68/oz →
Lip balm Amazon $1.33/stick → eBay $1.11/stick →
Tampons Amazon $0.078/tampon → eBay $0.18/tampon →
Pads Amazon $0.069/pad → —
Condoms Amazon $0.24/condom → eBay $0.30/condom →
Disposable razors Amazon $0.16/razor → eBay $0.47/razor →
Makeup remover wipes Amazon $0.12/wipe → eBay $0.14/wipe →
Face wash Amazon $0.62/fl oz → eBay $1.00/fl oz →
Face moisturizer Amazon $2.68/fl oz → eBay $7.79/fl oz →
Probiotics Amazon $0.52/capsule → eBay $5.09/capsule →
Fiber supplement — eBay $0.39/oz →
Cough drops Amazon $0.030/drop → eBay $0.046/drop →
Lubricant eye drops Amazon $11.94/fl oz → eBay $20.70/fl oz →
Plant protein powder Amazon $0.55/oz → eBay $0.62/oz →
Collagen peptides Amazon $1.43/oz → eBay $0.52/oz →
Toothpaste Amazon $1.66/tube → eBay $2.00/tube →
Dental floss Amazon $0.009/ft → eBay $0.011/ft →
Floss picks Amazon $0.021/pick → eBay $0.027/pick →
Electric toothbrush heads Amazon $2.49/head → eBay $1.05/head →
Razor blade refills Amazon $1.40/cartridge → eBay $1.02/cartridge →
Sunscreen SPF 30+ Amazon $1.25/fl oz → eBay $3.80/fl oz →
Body lotion Amazon $0.30/fl oz → eBay $0.59/fl oz →
Shampoo Amazon $0.17/fl oz → —
Conditioner Amazon $0.12/fl oz → —
Dry shampoo Amazon $5.17/can → —
Alcohol prep pads Amazon $0.011/pad → eBay $0.020/pad →
Vitamin D3 2000 IU Amazon $0.019/softgel → eBay $0.023/softgel →
Vitamin D3 1000 IU Amazon $0.028/softgel → eBay $0.026/softgel →
Fish oil omega-3 Amazon $0.15/softgel → eBay $0.050/softgel →
Magnesium glycinate Amazon $0.100/capsule → eBay $0.052/capsule →
Antacid chewables Amazon $0.055/tablet → eBay $0.062/tablet →
Omeprazole 20 mg Amazon $0.20/tablet → eBay $0.17/tablet →
Ibuprofen 200 mg Amazon $0.016/tablet → eBay $0.020/tablet →
Acetaminophen 500 mg Amazon $0.020/tablet → eBay $0.027/tablet →
Loratadine 10 mg Amazon $0.020/tablet → eBay $0.029/tablet →
Cetirizine 10 mg Amazon $0.020/tablet → eBay $0.031/tablet →

Amazon: item price (Amazon's own, else lowest new offer) before shipping and tax, via Keepa; accurate as of the time shown and subject to change. eBay: new Buy It Now listings from US sellers, item plus shipping, checked daily. Unit counts come from the listing data or title. As an Amazon Associate and eBay Partner, Sharpest earns from qualifying purchases.