Blade Sharpening Oster

Have a ton of these, would like to sell them on eBay.. they're sharp enough still for muzzles, bridle paths & ears, but aren't suitable for large shaved areas. (such as necessary prior to a surgery).

What would you pay for these if sold in a quantity, say, of 2 or more? Individually? Would you rather they were sharpened prior to purchase so they can shave large areas of fur?

Any input would be appreciated. I'm targeting the horse-show people with this question, obviously.