Varmint
NES Member
Both the p225 and p239 are on the EOPS list so pretty much any dealer can/will sell you one. First distributer I looked at had more P225s in stock than P239s. 2nd distributer about the same. 3rd distributer again, more p225s than p239s
I would say no real difference in availability. Should you want a p225, go into your LGS and ask them to get one for you.
around me nobody will sell it, but I did find one thanks to NES.