Hi I would say having looked at the listing and what is listed with it including work carried out. I think you would be looking at around ?500 up to ?700 it could even go higher!!!
I have one myself I am thinking of re listing after a time waster bought it and never paid me!!! Then later tried to fraud me!!!

Which after lots of email I finally got 100% feedback back and had the other persons account removed from eBay!!

I was going to start at ?250 but it has not had the work which this one has done and will need a rebuild as has sat for 5+ years now.
But I know when I had EVW engine rebuilt I paid ?450 just to get a big valve head and block and that was before I totally rebuilt to stage 3 fast road with other work I carried out !!! I was totting well over 2k ++++
So in my opinion id say you may be looking around ?500 reserve but any thing less is good price!!
I did note that only one new inlet and one new exhaust valve were fitted??? And only piston rings ?. not new pistons?? I take it they must be in good usable condition still.
Hope this help a little, good luck with your biding??
