Audio Connection is in Verona, NJ (
http://www.audioconnect.com) about 20-30 minutes from me. My experience with John Rutan is that he's very friendly and accomodating -- at the least, he's much, much more so than many of the other NJ dealers.
First, and please correct if wrong, it sounds like you inquired about the tubes after sending the money. From a point of suggestion, I would have asked all questions prior to handing over your money, just for confirmation, but that's no longer the issue obviously. Based on the advertisement, if the picture is of the actual unit, that's what you should be getting. If it isn't displayed as it would be sold, I would think they would or should state this -- what tubes are included (and if tubes are included at all!)
As you've already spent your money, I'd give them a call, and ask specifically to speak with John and mention that you assumed they were included as the advertisement indicated as such due to the picture, and that you otherwise wouldn't have gone through with the sale. If he's friendly and understanding of what would be considered his mistake, stick with it -- if not, ask for your money back, or speak with Audiogon. If you're just trying to the 'tube thing' anyway, there's plenty in the same range to try out if things go sour on the deal (the cheaper Dodd preamp comes to mind as well as Space Tech Lab)
I think you're perfectly within reason to state that it should come with the GE tubes or your money be returned. Either way, your transaction isn't completed yet......
Was surprised to see the ad on Audiogon -- I have thought that Audio Connection only advertised on Audioshopper. You can see all their listings via the link below, including the advertisement for the same preamplifier in the 2nd link.
Hope the transaction goes OK in the end, whether its getting what you thought you were getting, or having your money returned to you.
http://www.audioshopper.com/cgi-bin/classifieds.asp?action=fl&curpage=1&sp1=1&location=VERONA&vtype=B&stype=Fhttp://www.audioshopper.com/cgi-bin/classifieds.asp?action=showad&id=55710