DM doesn't get it (Rant)

[MachineWraith]

He might of considered that the store owners would value it differently?

None of the DM's pricing makes sense. Nor does punishing the player for trying to get more. Naturally the player will be wanting to get as much gold for his loot as possible.

Or the fact that evil clerics aren't usually specializing in removing curses, so they would have a lower stock of said remove curse. Failing that much, he's an idiot and thats about all I can defend him on.

There is no "stock" of remove curse. At worst, the evil cleric should just say, "I did not ask my god for the ability to cast that spell today. Come back tomorrow." There's really no reason for the evil clerics to charge that much.