I have a large collection of SciFi collectables and comics that i really need to thin out a little - the question is how to go about it? Does anyone have experience in this area? Are there any good internet sites that assist with valuing goods? Are there any good online trading posts (not overly keen on using EBay)? Failing that does anyone know any reliable/reputable SciFi dealers in the South/South East who will give a fair price for goods?