They are worht alot more than that. They are worht what the market is demanding, and for the last year or so they have become more rare, and thus the price has gone up. Alot of people want them, there is usually 1 or 2 sets on ebay at any given time.
Thats a used price. If you were to get new Aspecs from your local mazda dealership they would cost more than used jspecs
They may seem expensive, but are well worth the buy.