Tack costs?

I recently bought a new saddle that came w/ a bridle, saddle pad, nylon girth, and bit which i don't need. I am going to sell the bridle, pad, girth, and bit on ebay. They are all english items. The bit is a snaffle and the bridle is synthetic. I don't know what brand they are but they are all new. How much should i set the price for on "buy it now"?