No coupons needed for Mike's company, Ohio Heirloom Seeds
http://www.ohioheirloomseeds.com (he's a Tomatovillain too).
I buy from him every year and just received my fat envelope of seeds from him yesterday. Price per packet is $1.49 - $1.79, you get ample seeds (40-75 seeds in most tomato varieties) plus he has other veggies too. He gets your order out in the mail within one day of placing your order.
Super nice guy, quality heirloom products, and I've never had germination problems with any seed I've purchased from him.
Steve