Re: Where to go to sell a single malt (non-scotch) whisky?
I think 8% is a very competitive rate, all auction houses and web sites are going to charge something. At Whisky Auction.com the commission is on a sliding scale from 50% to 13% depending on the hammer price, Scotch Whisky Auctions charge a seller's premium of 10% plus £3 per lot to cover handling, photography and upload onto their website and then a further £4 if you wish to put reserve on the item. There is also McTears in Glasgow they charge 18% plus VAT of 20% on the commission.
A lot will depend on your location and what you wish to sell. Sometimes it is not worth the trouble as its value may be low, in which case just have a party and drink it. Post a few photos of your bottle on the forum, there is bound to be someone who will give you a valuation.