When doing pricing comparisons, focus less on brand and model, and more on basic construction. Compare to similar bikes, in similar condition. In my market, its about $50 as it sits. Depends on your location. When I lived close to a college, bikes like this would bring $200 easy.
__________________
Please don't confuse ebay "asking" prices with "selling" prices. Many sellers never get their ask price. some are far from it. Value is determined once an item actually SELLS. Its easy enough to check SOLD prices.