Here's the deal, bought mine last April, he builds Alumitec seats (contoured), and Diamondback's (square). Singles, fatboys, doubles, triples. I paid 275.00 for the seat shells, cushions (black and silver diamond stitch with embroidery), and raincovers. That was for a single and a double. 35.00 for the single shell and 55.00 for the double. First class quality, shiny black gel-coat with no scratches, can be seen in my gallery. The person that makes the seat shells did not do my cushions. If your interested in either number just pm me. (Prices could have changed since April, have used these suppliers several times with no problems.)