We have some in stock at The Fish Nook in Acton, but I'm pretty sure they are all male. You could also try Uncle Ned's Fish Factory in Millis. That's where I got mine from, and he tends to carry both Florida and Czech raised strains.
Ive been looking too. I work in Danvers and live in amesbury, Im afraid those places may be too far of a hike. Would the fish hold up ok that long? I think Id want a male and 2 females ideally.
Look up Emg on these boards. Sure she's 1-1/2 - 2 hrs from boston, but her fish are worth it. She just did a spawn, so they'll be ready soon. I got my pair from her. They are increadably hardy, and super healthy fish.