I've looked into this myself, and I wasn't able to find any company that offered 1st class stamps without some sort of recurring service premium. If you do a l

I've looked into this myself, and I wasn't able to find any company that offered 1st class stamps without some sort of recurring service premium. If you do a lot of shipping, I really recommend getting a Pitney Bowes machine to ship stuff first class (and all the other classes as well). But, of course, there's a monthly rental fee (roughly the same as stamps.com), and you said you wanted to avoid that.