Been thinking about this more. Probably won't start up commissions, since I'm not in the mood to memorize the legalese behind Paypal, but do you think that this commission system is fair?

You give me:
-$1 for every 200 words, rounded up (1700 words = 1800 words = $9).
-Detailed story idea that I'm okay with writing
-A time limit I can agree upon

I promise:
-If I can't write enough, then the price is changed to what the current word length reflects based on my count and I refund the excess cash. (Commission price: $20, 1700 words, refund $11)
-If I write over requested length, extra words are free of charge.

If you can think of any loopholes, tell me as well.