I agree with Melissa. Yes, the owner(s) might like to take a look at your lamps. Take a picture of them, then give them a call.
They have multiple different vendors that sell at the venue. I'm not sure if the owners would directly buy or not your best bet would be to bring it in. Even if they were to buy antique lamps they're going to want to see it so they can appraise it.
Yes they have all kinds of lamps. The prices varies.
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