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I'm looking for a quality, but not too expensive futon mattress (not the frame - I want the mattress for my platform bed). Any suggestions for good places to try in the city?

Thanks.

nwu, i've heard good things about right on futon
http://www.rightonfuton.com/

we bought the one from ikea. it was the most expensive one, but we found it at the sale room. it had been bought and returned unopened. we got it for half price at 300 bucks. so far, we've slept like puppies.