a lot of stores sell them, IIRC lik-sang and Lan-Kwei have a lot of copies for cheap. as far as it goes, bleemcast is amazing, the entire thing was practically coded in pure SH-4 ASM. the leaked beta you refer to is around 30% complete, for a list of compatible games go to http://bleemcast.no-ip.com
I got about 275-300 PCE roms if you would like some, contact me. as far as emulators go, I like Hugo-X, just because: A) the gui doesnt suck ass. built in kaillera client/server C) joypad + TV = <3