I've traded in various camera bodies to Wex over the years, and a few lenses too and I've always had sensible trade-in prices.
Their prices are decent, occasionally you can get a bargain on a temporarily reduced product. Not consistently lower than competitors, but the odd bargain appears once in a while.
Their used selection is also pretty good and they are clear and accurate about the condition of used items (unlike some).
Customer service is courteous, helpful.