Flameduck is correct in the idea that it's the profit that matters not the outlay. The games I've spent the most making have made the most profit for sure. Problems arise if you don't have the capital for the outlay...
I've paid people hourly over the net to make a website (and people have paid me for similar work), but I've asked them to keep a log and basically the tasks they log and the hours looks reasonable, and it's quicker than I could do so I'm happy.
Having said that of course a fixed fee, or %, or bit of both is way simpler. Fee on completion of course to weed out the "non-finishers"
I've paid people hourly over the net to make a website (and people have paid me for similar work), but I've asked them to keep a log and basically the tasks they log and the hours looks reasonable, and it's quicker than I could do so I'm happy.
Having said that of course a fixed fee, or %, or bit of both is way simpler. Fee on completion of course to weed out the "non-finishers"