Compressor Value

Just a bit of an open query:
We've got a compressor at our club thats a bit old and slow, and we've also
got a bit of spare budget lying around (can you guess where this is going?
:O) )
The current compressor is a Bauer (KA14-5.5), made 1980, 210l/min, 7.4cfm,
225bar max, 900rpm. Its had an extra filter stack added too - does anyone
have any idea about what something like that may sell for if we tried?
Obviously just roughly, are we talking £100, £200, £500...?
Second, what sort of price would a new (well, secondhand but better)
compressor likely be available for? We just want something with a bit more
capacity, bit more speed for filling tanks now we're getting more and more.
If it could do clean air too for Nitrox tanks than that'd be ideal (if not
we'd want to add it).

Any ideas on vague costing for that? Is there a big secondhand compressor
shop somewhere I can look at?
This is just very early preliminary investigations into whether its even
feasible, its been discussed several times in the past at exec level, but
never had any numbers to work from.

Thanks

David

You can take a look here: http://www.ide.de/e/index.html

Always some used BAC in stock.

Regards
Chris