Need new brake calipers

I’m looking for brake calipers for my Skylark Custom. I asked for Cars & Stripes and they want 359€ per piece + 80€ deposit for the old part. With Rockauto you can find the one here http://www.rockauto.com/catalog/x,carcode,1022881,parttype,1704 Do I understand that those my calipers just overhear and then send them back? Then I looked at Ebay and found them here.http://cgi.ebay.com/…/…ZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories But can it do anything if i h see what else is there and they cost the same as with Rockauto?