302 casting small block heads

Allied, ATK, auto zone, rock Auto just a few but I plan on using bigger valves and springs so I don't need a reman ready to go head so I am looking for a used set.
I wouldn't sell mine for less than 300 used and greasy. All of those places you need to call and find out if that casting is actually available still and the price plus core charge..and they don't sell them bare...so they'll be loaded ready to go and you'll have to scatter them for your big valves. I can have them in any order you want...but frankly I'm sick of all the talk that they're so desirable ...UNTIL YOU WANNA BUY SOME..then all the sudden theyre worthless and no one wants to pay. The 318 crowd can be the biggest bunch of double talking cheap skates sometimes. If those outfits have them..and at a affordable price. ..why are folks still asking for them here.