Block,
I just recently purchased and drove back my 3-Series Coupe from the UK and saved myself around 20% of the market value here. To be honest the money sounds about right, the mileage is a little high for its age but once you consider it's engine size and the fact that it has most likely had motor-way miles it figures about right.
The only caveat I would add is that you NEED to have the car checked, even if it is not a private sale. Mine had not been serviced in 2 years and although it was in good condition a lot of resonably standard parts had to replaced i.e. tyres, brake pads, brake lines, one rear spring etc (ended up costing me €1,000). This was supposedly on a car that had a full garage service history!!! A lot of the car's in the UK will have these supplimentary parts replaced more oftern then in Ireland because of the use of salt on the roads (my own car came from the highlands - lots of salt). All in all though with a little bit of effort and some patience you can get great deals on higher spec vehicles not available in the Irish market.
Best of Luck,
Regards,
Sambo