If you want a bargain, I'd try e-Bay.
Although there are the rare exceptions, when you want to buy something high-end, it's going to cost you. That's how business works. I know this because I used to work in high tech as an engineer. When we developed devices, there would be the low-end, low-cost ones that we would make our money from high volume sales. The high-end devices we made big dollars one because we charged a premium margin. That's jsut how it worked.
Of course, today there is no high tech industry (or not much of one) because the Internet gold rush turned out to be "fool's gold" and we're all unemployed!
-- Andy