Actually I just found out that Orgnigram includes shipping in the price. Found this in their FAQ section.
I think that's what Tweed does as well. Bedrocan charges shipping after the first order of the month. That's how I read it. I was just looking at some of the other LP's that charge shipping like Cannimed. They charge $7.50 to $13.50 per gram plus shipping. Which ranges from $13.50 to $25. That really jacks up the cost for pot.