This is a $250 item with a $5 cost but I'm sure they are trying to pay for the plastic mold. But I wouldn't mind paying if it worked well. The design flaw is that the plastic form isn't a perfect fit with the helmet. So that is understandable, however the plastic is too rigid to compensate and therefore there are gaps in the seal so a lot of air flow escapes. So don't get this one unless you can't find anything else.