Further information:
I have a set of ProAc Response 2.5 speakers for sale in Cherry.
These have been moderately used, but have sat boxed in storage for a good number of years due to me having relocating overseas.
Drivers are in good working order, although the foam tweeter surround has dried & crumbled on the right hand speaker as shown in the photos. This is cosmetic only.
Replacement foam surround for the tweeters was quoted as £50 from ProAc, or $40 for non-branded versions from the Scanspeak distributor in Australia. They are adhesive backed,