you can get an ok laptop dualcore 2.3ghz intelhd 512mb dedicated videomemory 4gb of advertised ram 3.7 actual available for 350-380.
hell, you could get away with 1.6ghz machines if you had a usb audio interface, although I'd recommend a desktop if that's the highest you want to go.
Average laptop/desktop price to performance is a 200 dollar gap, and back in 2009 it was a 400 dollar gap