Dave – I have to say I'm afraid I can't share your 'suspicion' of eBay for as far as my dealings on there as a seller (and a buyer) I have had nothing but success over several years now.
I follow three basic rules – take several pics of the item. Describe if fully and fairly, warts and all and make it very clear what you won't do ie 'sold as described with no returns accepted', 'no overseas sales' or whatever other stipulation you wish to apply.
I've just parted with an oscillator – ten day auction with no bids until the last hour or so. It made considerably more than the opening bid I placed on it.
A good tip is to take images of it as you pack it and as ready to send – just for extra insurance against potential claims for poor packing.
Yes the risk is there that it may not do as well as hoped – had that happen a couple of times with quite pricey IC engines but that's the way of auction anywhere – and then again I've had more than enough the other way to compensate.
Good luck with selling it however you do it
Best – Tug