EDIT - You can't build your own ASIC rig either
Why can't I build my own ASIC rig? And how could I build a good
non-asic mining rig?
And where could I buy a
non-ASIC miner?
You can, but... you need specialized hardware and software to program and ASIC. then you need to design a circuit board to support the ASIC chip.
How the questions about the
non-asic stuff above?
there are a number of posts on building GPU based miners in the mining section. FPGAs have the same problem as ASICs.
The thing is with cost of equipment to mine growing rapidly, most feel that buying on speculation is more profitable than mining.. basically it sounds like the days of indiviuals mining will soon pass and it will be left to those willing to make large cash investments.