The first question is, why do you think anyone actually wants to buy it? Obviously be easier to judge when you post the list up but if it isn't plastic with a colour LCD screen then it is probably dead. I list some 20MHz analogue scope FOC except postage, been at least two "I want a cheap scope" posts since, neither has contacted me.
I am clearing dozens of Tek 7000 mainframes and plug ins, can't even get rid of the current probes so far. As for the actual scope, forget it. Likewise function generators, if not digital then no much interest, I like the old Feedback units, work well.
I have Nixie tube based counters, DVMs etc but unsaleable, even for the tubes. Even old original Mullard audio valves seem only to be worth £2 each. Logic analysers, forget it, RF sig gens likewise. Anything decent like precision R and C boxes, no one wants them. The secret seems to be size, no one has any room for a decent 7000 scope, they want something the size of a lunch box which is unreadable more than 12" away.
What I would suggest, and what I have used, is a local INDUSTRIAL auctioneer, NOT NOT NOT a fine art one!!!! They will list anything, don't have to get it working, the buyer collects so no postage, all for a selling cost of 15.5% plus VAT. My auctioneer has just put a £3 listing fee on, and that would have doubled my last sale costs. Of course you won't get much, HP 8561 analysers for £300 or so, AVO 8, 2 for £12, but it does get rid of it.
If all you have is stored inside a house then I doubt you have that much, is is when the sheds, garage and everything else is bulging, THEN you have a pile of test equipment!