I agree with monkeybomb to an extent.
A proper response would be: Bla-Bla.com has this item for $XX and include a link. Lowballing ($100 offer on a $300 item is threadcrapping) or comments about the seller (you must be nuts)are uncalled for.
Bottom line is buyer beware, this forum has no method of settling disputes with bad sellers or rip-off artists so I know from experience that it ultimately is up to me to be certain of the deal and the seller's rep.
I ask a lot of questions now, more than before I was ripped off. Fortunately most sellers here are reputable. DTA.
My 2 cents.
ARCADIAC!