I dunno, purchasing your levels should be kinda expensive in my opinion. The higher levels were meant to be harder than the lower; therefore, doesn't it make sense that they're harder to buy?
I agree, but I spent over a billion coins for dusting on LastWish (stuff I had left over from being admin, I have no money now o_O) and I got to level 300something. I doubt anyone will ever get close to a billion coins, but I guess that's a good thing so people don't get over-powered. Even at remort 100, I still had a little trouble killing cents at around level 200 (and that took 200 dusts).
The harder it is, the longer people will play because there is always something to work for =)
