As per title. Mates going to look at one tonight, but neither of us have an idea what they go for second hand. Its all in good condition.
This entirely depends on where you live, what condition the guitar is in, and who is selling it. For a used Schecter in good shape expect to pay between 50 and 80 percent of retail (not MSRP). If you're lucky the seller is hard up for cash and will go lower. If it's one of the oddball Schecter runs with hideous inlays, a useless pickup set, etc. the prices can go as low as 25%.
I'd say somewhere between $200 and $250. Maybe $300 max. It's a really nice guitar. Only pro features its missing are brand name pickups.