1500 with MIDI...
but well, there are tons of 303 clones available, few of them build the same way with nearly the same components (without a stepsequencer though), sounding very very close.
thats the reason roland can never build 303s again, so many companies depend on it.
check them clones out if you want, depending on which model you want, you can get one at ebay for 100€ already (mam mb33), heres a comparison, samples provided:
http://www.ladyada.net/make/x0xb0x/samples.html
the comparison is on a 303 clone manufacturer though site, claiming his 303 (which comes as construction kit) to be the best anyway.