If you are willing to spend the time, check through the many threads on the Harbeth website forums. Here is one that discusses older models: http://www.harbeth.co.uk/usergroup/forum/the-harbeth-line-up-m20-m30-m40-1-p3esr-c7es3-shl5/previous...
In my opinion, that sounds like a reasonable price. Not a lot to risk, given the reputation of their speakers.
In my opinion, that sounds like a reasonable price. Not a lot to risk, given the reputation of their speakers.