Oh god no. Nobody should buy poker software that allows cash games to be played from:
1. somebody that posts here
2. a software designer that does a wide range of scripts
It'd need constant updating to avoid hacks such as see cards, add money without adding money, ect.
Not a good idea at all in my opinion. Especially so inexpensive. You need to buy from a licensed company with full time on site programmers and people that test hack the script.