How long will the PS3s last?

5 days till the US release if I am not misstaken. Me and my cousin are planning on importing one. Since the europe release is pushed back quite alot. And we will actually save money, and that is including the shipping and other costs!

I dont wanna buy one right away, I was thinking of picking it up after the first price drop. The question is, will they last till then? And how long will it take for a price drop?