I'm addressing my wedding invitations and skimming through Hacker News this afternoon. $25 to mail about two dozen envelopes (invite plus stamped rsvp), and half a dozen more with international addresses or additional weight that I'm taking to the post office in half an hour. And that's the bare minimum I could get away with sending paper invites to, everyone else is getting evites. Then there's a round of rehearsal dinner invites and thank you notes going out in the next couple months...
Not to mention I have two packages to return, and a bunch of my wedding accessories shipped USPS. All this week, before I consider any business-related needs (another 6-7 envelopes).
Not a terrible service at all. Could be better, fairly cheap for what it is, and I wish I could pay to not get junk mail, but...not too bad. Definitely better than Ontrac ;)