It looks like a vintage small jig borer and not a DP although it can be used for that after a little add on.
My initial thought, is run and get it but then looking much closer at the photo's, the asking price, then asking myself the reason why I would want it and how much money, time and effort will be necessary to get it functioning well? This gives me huge pause and this type of project is something I do regularly full time.
That could be an awesome and accurate DP when running well but it appears its a long way from that in current condition. Not having a motor and more importantly not seeing a motor mount and not being able to see the chuck/collet area and spindle also gives me great pause. The middle pulley also gives me pause, EDIT see below, its a down feed.
I would love this as a DP but it appears that it would need substantial amount of work, effort and cost to return it to good working condition and that's if the important easily non-replaceable bits is not missing, too worn out or damaged.
Not knowing model is also an issue. It definitely say Allen on it. Do you know the Model #? I see another name plate on the left side on body.
Without this also makes it harder finding any photo's, other examples, documents or specs on it to help you get it back in working shape = time comsuming. The bearings is another issue that needs checking. Do you have access to a lathe and mill to make anything if needed?
You say VFD is not possible where you are, where are you located? A small three phase motor connected to a 120v single phase VFD connected to a 120v wall outlet would also be my suggestion and much easier to do than you think to do. BUT you still have other obstacles in front of you to deal with way before even considering a VFD, although it could shortcut/bypass some gear drive issues.
I say its way too expensive for what's needed to be done, maybe $50-$100 max but it also depends what your using it for and how badly your going to need it and how much money & time your willing to invest in it? When fully finished correctly, this machine will be worth substantially more than a typical vintage DP. A good working, vintage, pretty one typically sells for $600-$1K after restoration but time and money spent on it could be similar.
It looks like it could be a vintage fixed table, non-xy made by "Linley" or "jones and shipman" for Allen?
This will be a labor of love with quite a bit of custom fabricating needed but once done, it will be a beautiful and special DP and the darling of your shop. This is far from any K-S Craftsman DP, zero comparison. When working, this is a real machine.
EDIT: The middle pulley looks like it's for a motorized down feed (Very cool!)