A company called Behringer are currently making modern ultra-cheap clones of as many vintage ultra-expensive vintage synthesizers as they can. Three models are complete and shipping, and there are rumoured to be another fifty or so in the pipeline - including the P5.
Behringer get a lot of flak for being "cheap" but their guitar pedals at least are mainly just 1:1 clones of tried-and-tested vintage analog circuits. I wasn't aware of their synths - thanks for the heads-up.