Vaunte is one of my favorite consignment websites. They have an excellent eye, and you can digitally upload items for consideration, which often takes less than 72 hours. Commission is 85%, by far the best on the consignment market.
The Real Real is a fantastic consignor with a complimentary white glove pick up service. They offer 60% commission on items sold, and are often running promotions with shopping credits. For the month of May, new consignors will get a $50 credit. The only downside is they might send items back to you, which feels a bit like a slap in the face after a seemingly successful white glove appointment.