Quoted from ff6735:

I don't think a lot of Pinsiders would buy at retail prices for used games, however there is always someone who doesn't know better or is new to the hobby. I was that sucker on my first pin before finding pinside. If they offer some form of warranty and deliver, there is a market segment for that. The type with money who don't care and pay for what they like, it gets delivered and when a simple problem arises they call that seller and pay them handsomely to fix it. Its not the average pinsider, but those types of buyers do exist. Some retailers have made a decent living doing this and have been in business for years, but cater to a certain crowd.