I bought a NEW Janome 1600P DPX from the Sew'n Vac Ebay store. I was satisfied with the price, free shipping, etc. then I discovered their policy of meeting the lowest price you can find on Ebay. I found the same machine for $150.00 less and they gladly knocked $150. off their price.
Since then I've bought a InkJet Printer and several quilting "toys" from them. Highly recommend them.
Don't think I'd buy a sewing machine from an individual Ebay seller, I'd be afraid of the hassle if the machine wasn't as described or was damaged in some way)
I'd avoid anything less than 100% feedback on any seller