Homier Distributing is offering their Speedway Series 30 amp Plasma cutter for $399. Here’s the lowdown: It doesn’t have an onboard air compressor, so you’ll need a shop air supply of 3.5 CFM @ 70 PSI minimum to run it. (Check your compressor’s stats carefully — this is more than most small compressors can handle.) You’ll also need a 220V/60Hz single phase outlet, rated for (we’d guess) at least 50A. Homier claims a 30% duty cycle at 30A, and it ships with an air regulator and an extra electrode and nozzle.
I know you get what you pay for, but this is tempting if you’ve already got the necessary auxilliary gear around the shop.