This have already been discussed before, and yes, I see two major problems with this :
- You'll waste your time creating VM and installing your own payload for only a few cents at a time.
- PPI companies make money through the advertising they send to "infected" machines. They'll notice that your installs are crap and don't convert at all for them.
Making installs the right way without cheating the ppi company will be probably more rewarding for the efforts you'll make, and won't get you in trouble with them.
just my 2cents