I bought a Jolida cd player on 30-day trial from a place called Sound Odyssey and there was no problem returning it, but there are a number of other sellers that also do this, several of them advertise on Audiogon.
There was never any pressure to buy something else, although that's what I intended to do. I feel a little guilty returning an item, but this internet thing has to have some alternative to the physical store where one is able to touch and demo the gear in-person. Of course, I suppose the agressive pricing is already the incentive to buy over the internet, but I would still hesitate to get anything from a place without a good return policy. Call me a spoiled consumer.