It's a complex set of sub-markets. Like, for example, if your kid has one...it has to be NHSTA crash test certified to put on a school bus. Or, for people wit

It's a complex set of sub-markets. Like, for example, if your kid has one...it has to be NHSTA crash test certified to put on a school bus. Or, for people with very limited mobility, they need very special cushioning to avoid bedsore type problems. Just 2 examples, there are many more. Though $65k still strikes me as unusual.