Barbells in Boston?

Anybody have an idea where I can buy free weights locally? My weight machine just doesn't have enough range of motion to even approximate a clean. City Sports only has dumbbells; Target only seems to sell weights online; and ordering from anyone online results in hideous shipping.

Cheap and somewhat chintzy is fine: they're not going to see terribly heavy use. I'm poking at CL but figured somebody might have another idea.