Have you ever looked around at other USED parts or even looked at new parts that are for sale like on ebay or anything? you can buy stock heads their and here all day for $10-$20. Their was a few NEW IN BOX cylinders on ebay a month ago for $125 each. Your prices are alittle on the high side. I usually keep my mouth shut when people try and sell things for crazy prices, and I'm not here to jump your shit like some d-bags but you may want to look around and see what these parts really go for, and also don't go by the buy it now prices of the shit on ebay that has been on their over a year. good luck