Well... for items like that, prices aren't set, they're all relative to inflation. I only remember 2 or 3 on the market EVER so it's near impossible to price check it.
Currently, there is a seller wanting ~350 for theirs, but that doesn't mean that's the price, that's just their starting price, honestly I'd prefer Jwand over this and it's half what they're asking in price, so I think 350 is way steep relative to other items