Silver Britannia 1 oz typically costs $3.78 less than Silver Krugerrand 1 oz on eBay right now ($76.99 vs $80.77 median asking price, item + shipping). Per troy oz, Silver Britannia 1 oz is cheaper: $76.99 vs $80.77. Prices from filtered US eBay listings, checked twice a day; asking prices, not sold prices. How we price.