Check out this site:
https://www.bitpremier.comIt's a 'higher end' site where people tend to sell high value items including; property, cars, art, fine jewellery and collectables. You may find yourself a buyer there who doesnt lurk or actively use the forums.
Either way, you can continue posting here. As long as there is demand, you will manage to find a buyer. It may take some time but eventually you'll find one. Maybe by offering Bitcoin discounts you could try and entice others not in the cryptospace to buy your items using BTC.