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If it's in very good condition, it might be worth $400.
If it is not in very good condition, if it's not really working, etc., then it isn't worth $250.
So this one might be worth its asking price on that web page. But, it isn't worth servicing and refinishing if you just wanted to do that to re-sell it. Refinishing it would cost very much more than you could get from it by resale afterwards, period.
As for who could do servicing or refinishing for you, since those are two different services, and since it depends on where you are... please tell me what your local zip code is, and I will finish answering your question.
Yes, I did catch that detail. Player piano inner workings are different and distinctive... that's why I said (or implied at least) that refurbishing would be a different servicer from refinishing (the exterior surface, essentially, or 'cabinet'), because refurb. of player pianos is such a specialty trade.
If the pump pedals don't fold up, and if they are supposed to do so in this model, then that's a defect, decidedly, and reduces the value by at least $50 to $100 I would guess.