I have an Arai helmet in excellent condition with bag. Helmet says Astral on the back and has a Piranha with the top fin done as a Japanese flag. It is an "M" size. Not even sure what it is worth so if you are interested send me an email and I can respond with photos.
Has a minor scratch on the shell and shield from storage and the side cover has a spot where the clear bubbled but that part can be replaced. This is a great helmet both comfort wise and with its looks.
Asking $300 plus shipping.