That lathe looks like it has seen some action but its hard to tell from pics. The thing that give me pause at the moment is that it is a metric machine, not Imperial. That means you have to work in the metric system; not a big deal, as most of our brothers across the pond do this all the time. I would personally not prefer to do this, though.
Just so you know, the S11 has induction hardened ways and tends to wear slower as a result. The lathe is assembled like a Swiss watch - everything goes together without slop and it is as simplified and logical as it can get. Minor touches, like a hardened button on the saddle where it contacts the carriage stop or the ability to adjust the crossfeed and compound leadscrew nuts to eliminate backlash are things you don't notice but make a difference. It was assembled to a "toolroom" quality standard, which means there is a DIN spec they followed.
You should know that Emco no longer supports this lathe so parts will have to be purchased either used or new old stock. Parts for this lathe are hard to come by because they just don't break very often. Accordingly, parts will cost you if you find them.
I have no regrets. My spindle has zero runout, is quiet and very accurate. No backlash on the cross feed or compound, which is really nice. My lathe has a 115V, 2 HP motor and is an Imperial model. It will take a 0.20" cut in steel without even slowing down; I have to slow it down a notch to go deeper. It will get up to 2500 rpm or so and that is fast enough for HSS, not for carbide tooling.
By the way, that milling attachment is highly regarded. With a full, independent base it will go for over 3K all by itself. I never liked the idea of having a heavy milling attachment hanging off the side of my lathe bed and if this were mine, I would remove it and find a base for it or sell it.
3K for this machine, if you don't mind working in metric, is a steal. That is, if the machine is in good shape. It will clean up fine but you need to look at the ways and gears. The headstock gears run in an oil bath; you can see them by removing the four screws on top of the headstock. Check to be sure there are no missing teeth. If he has a change gear set, grab it - they are hardened and ground and are worth over $250.00 by themselves and came with a carrier spud in the set; make sure its all there. The change gears should also be inspected - three screws in back of the headstock removes the cover so you can see them.
Again, this is a metric lathe. If you want an Imperial then let it go and consider that SB or a PM. If you do buy it, I would sell the milling attachment on ebay and recover most of the cost of the lathe and buy a separate milling machine later. Good luck with this.
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