For those that don't swap phones annually (or multiple times per year), the growth in tech at reasonable pricepoints has been pretty incredible.
SGA2 is what, $200-300 range? Not cutting edge, but damn nice. And the phones below it in the 100-200 buck range are as powerful (or moreso) than what people were paying out the...rear pant section...for in 2011.
Call me crazy, but 1-2 years ago, I did not yhink $500-600 phones (or maybe 200-300 with crappy contracts) becoming what is now rather 'entry level' tech. As PC hardware has slowly peaked, Moore's law has been in overdrive for the mobile market.
Or the general idea of it, at least. Tech (processor performance, RAM amounts, and such) is surely doubling in less than 24 months, and prices are dropping even faster. Granted, a new budget phone is built a good bit cheaper than similarly performing older example, but I think that just reflects the influence of unchanging prices for basic materials (plastics, glass, metal bits, et al).