On a few occasions I have successfully used ebay to dispose of things such as freezer, dishwasher,fitted kitchen cabinets and furniture that I would otherwise have had to take to the tip or pay to have taken away. I advertised them on ebay as 'buyer to collect' and got several offers on all of them within a few hours! People semed happy to drive 50 miles to collect.
I wasn't asking much though (£15 for freezer, £150 for kitchen cabinets, £100 for couch) so if you are looking to charge a high price you may not sell quite so quickly.
Having said that, when I got a new kitchen i got £100 for a five year old dishwasher that had cost me £200, which i thought wasn't a bad price for something that was just taking up space in my garage.