Lorraine Schwarz used a website instead of a real estate agent to sell her Colorado condo.RidleyLorraine Schwarz used a non-traditional platform for condo sales and saved money on agent commissions.Schwarz has bought and sold several homes and felt she could do most of the work herself.By not using a traditional agent, she saved about $16,000 in commission fees.This as-told-to essay is based on a conversation with Lorraine Schwarz, 70, a retiree…