z0mb13,
A few questions:
1) What is the actual price you paid (with and without CA taxes)?
2) How do you know this person, eBay, forums, you know them in real life?
3) If you sell through eBay remember eBay fees and Paypal fees.
4) What forms of payment are you going to accept for your 700m?
If it all works out, should be a nice easy profit