Join Date: Apr 2006
Sportbike: 95 Triumph Speed Triple
Years Riding: 15
How you found us: member
As mentioned, a lot of manufactures offer an inspection service to determine if the helmet is still safe.
As far as price goes, all helmets sold in the U.S. must pass the same standards, no matter the price, so a $600 DOT and Snell approved helmet offers no more protection than a $150 DOT and Snell approved helmet. From what I've read, the additional Snell approval doesn't add much more in terms of protection than the DOT standards, so take that for what it's worth. Most of the additional cost of a helmet is in features, and graphics. Only you can decide what that stuff is worth to you.