If your a first time buyer I would suggest that you keep looking. Something in that add is hinky to me as the seller is not a machinist. It looks to be missing a hand wheel on the table. The collets shown are an odd form so tooling may be difficult. It looks to have power feed on both X&Y which is good but the seller says only X, How come? If it does not have power on the knee then boring with the vertical head is difficult to very tedious. No quill and no powered knee makes drilling a labor. That said Adcock and Shiply is a good name in the machining world, but make sure that it is an English and not metric machine if that is what you work in.
That said I do have a Horz mill with most of the bells and whistles and also a bridgport style mill. I would give up the horz before the knee mill. Your going to find that tooling that machine up will probably run 2x what an R8 machine will.
So I will say again, I would not recommend that as a first machine. If it were a tooled machine with vise, cutters, arbors, and such then I would be so so on suggesting it. But as it sets for a first machine I don't.
lg
no neat sig line