Chris,
I checked earlier today and Discount Tire Direct had a pair listed on eBay. Before when I purchased mine, they didn't show any on eBay, but I emailed them and they put a pair up for me to purchase.
Actually, I just searched, and they show a listing for 4 of them:
http://www.ebay.com/itm/4-NEW-275-40...item4863310a97
When I emailed them they responded quickly. Perhaps you can call or email through eBay to confirm they are available, but the listing shows 2 sets...
Good luck! See you this weekend, weather permitting.