Michell Prisma Table; worth the gamble?

I posted this on the Audio Asylum and I was looking for a bit more feedback.

Just one week ago today I bought a Clearaudio Emotion turntable and am very satisfied with it. But yesterday I was at my local record store and they sometimes buy tables from people who are selling off their entire collection. I noticed a new table in stock and knew right away that this was no ordinary '70s era mid-fi deck.

After enquiring I was told that it was a "Prisma" and the asking price is $300 Canadian. I went and searched online and found that this is in fact an early Michell table, a version of the Transcriptor Hydraulic Reference. From what I saw, it was the mkII version without the black subplatter but also without the glass platter; it appeared to have an arm similar to an SME 3009, though without a closer look I can't be sure.

Would this table be worthy of picking up for a test on my own system, even though I've just bought a new table? Would it be easy (or even fair) to buy it and resell it at a more fitting price, since this dealer obviously doesn't know the significance of what they have?

I tried to get the best of both worlds by encouraging some friends or my father to buy it; that way I wouldn't be ripping off the store just to make a buck, I'd get to hear the table regularly and I wouldn't have 2 tables when I only need 1. Sadly nobody is interested and that just leaves me to ponder if this offer is too good to pass up.