I was looking around for Microsoft keyboard and mouse combo and found eStore has different prices for their online store and ebay store. Turns out after 20% off, their ebay store price is still higher than their online store price
Online store list it for $32
http://www.estore.com.au/microsoft-wireless-desktop-800-keyb…
Ebay store list it for $46.20
http://www.ebay.com.au/itm/141837720308
That's interesting.
ebay fees, paypal fees,postage inclusion, 20% ebay discount