Affordable SD Cards

I remember having a 256, then it became a 512, then 1GB, and look now, and there's 16GB. I am talking about this particular sd card. Do you still remember how much it was sold in shops? It used to be really expensive. But look at how much they cost now? The price of a 256 is now the price of a 16GB, even lower I think. I want to have a 16GB so I can take unlimited shots. I don't need to download as often too. What do you think?