How'd you sell the 465s? Fleabay?
One reason for taking more than £100 is that you may well find a lot more than you expect. There is usually some interesting test equipment, quite apart from affordable good SMA/BNC cables.
BTW, I've just seen (and will correct) my previous statement: it was a working 7.5 digit DMM for £40.
Hmm you really a TEA when you can walk away from a working 7.5 digit DMM for £40
Erm, I only walked away when it was £50
Sometimes later is better, at Kempton and other car boot sales.
But then I got an 8.5 digit for £75
but had to spend £25 on a new Fischer mains switch/selector/filter
and make my own cable
But that was offset by the battery powered transportable 10V sources and Guildline resistors for £14 each (not at Kempton)
Took the reference to Hannover maker faire, and it is 9.999571V, and the 8.5 digit DMM is (now,eventually) ~25ppm different.