Well, I can understand why FD want to charge for skins, it helps the generate some added revenue to help maintain the game. I think the block colour packs should be a little cheaper though, and more detailed designs costing more.
The problem is, we dont really have any great skins, bar a couple here and there for the cobra and viper. And I think this is the biggest problem.
I mean how long was it before we actually got a skin for the anaconda! and basically that was just a block colour too (albeit gold reflective colour)
We need more actual designs, varied looks and styles, not just block colours. People want to express their personality through skins, and there is nothing wrong with that. I have no problems with paying for a skin that I really like and reflects my personality, and I think most others would agree with me.
We had a paintjob competition not so long ago, and there were TONS of good designs, I wish FD would pick more than just one per category, and actually give us some choice.
In essence I can understand what your meaning, but I do believe their should be some cost involved, and maybe once better designs start being released, they will lower the price of their colour packs.