I wish the seller luck getting that price. I speak from experience w/the Arch's -- one of those chip lines that you love & purchase but when you go to sell, ouch. Lucky to get .35 to .40 on the dollar. Mind you I think they are great chips but for whatever the reason the resale value on most ceramics sucks.
But if a person wanted a nice cash set, I'd send them a polite email saying, "Hey, I really like those chips but I only have $350 to spend. I know that's lower than your offering price, but possible if you don't sell in a couple weeks you'd consider it." blah, blah, blah.
It's amazing how many deals on various things I've found this way. Anyway, my 2 cents.