Do I sound angry 8) If this guy (who's tobacco I've never tried) suddenly feels the need to ask for shipping, he's taking a calculated risk, and frankly, it's not bad business - piss of the cheapskates,or increase prices on the paying customers. Kind of a no brainer. That free sample thing has been going for a looong time, long enough for him to know if it's worth it or not.
More importantly (to me), and kind of off topic, I suppose, we're talking about pipes and tobacco. By all accounts, not a cheap hobby, regardless of your preferences. If you'll get pissed off about paying for shipping, you'll have a tough road ahoe.
If this guy is doing things wrong, he'll be out of business soon enough, saving future moochers the pain of shipping costs.