Yep. They also over-charge for propane, sell the tanks not fully-filled, and don't compensate you for propane left in the tanks when you return them. All to i

Yep. They also over-charge for propane, sell the tanks not fully-filled, and don't compensate you for propane left in the tanks when you return them. All to increase convenience slightly (I can get the swap tanks at the supermarket or Home Depot, but I have to go to a specific gas station to fill the tanks I own). I strongly prefer the non-swap solution.