Well, everything on their Superstreets site has a healthy discount - maybe the best prices anywhere, but I think those are their normal prices. Stuff like grade crossings, etc., might be discounted more.
I buy a lot of SS stuff from them.
Western Depot even has many of the original this-was-really-made-by-K-Line-not-K-Line-by-Lionel SS things, including some of the origina-year vehciles, etc. one of which is still best SS vehcile ever made, K2629-04, the same Ford van body still made by EZstreets today, but with a metal chassis, real spring-loaded pickups, a flashing light bar, AND the only SS I have ever seen with this - a F-N-R reverse unit with F only switch underneath. Amazingly, mine fully functions on AC or DC.