how much to ask for X heads?

I hope this is in the right place,But i have a set of erly 68 X heads(no x betwen spark plug)2531894-D. They have the x on the under side.I have listed the heads for sale in nc for $300.Am i asking to much for the heads?

I hade a guy come out today to look at them and he told me that 2 of the ex valves had sunk up in the seat.and that thay were only worth $100

other than not having hardend valve seats the heads are perfiect!



Is he tring to get the best of me? im a honest person and would like to ask the honest price for them