Reputation is a big part of it. The people dropping their prices just to get things sold are actually helping other breeders in the future... Those of us just starting out. The only reason id buy a spider for $150.00 is if i personally knew the seller and knew for sure he/she was going thru some serious financial issues. Otherwise i wouldnt trust that breeder.
And you'd want to see the snake, as well as it's parents, right?