Hey all,
Just an update....
I waited him out...I give three days to pay and then sent a message asking if he planned to pay or if I should contact ebay about nonpayment. I also explained that sellers have to pay fees, etc so backing out of an auction because he didn't fully read the information wasn't fair to the seller.

He profusely apologized and paid! Yea!

Thanks for all your help and advice!