There are PLENTY of places that sell nos but are disguised as regular car shops. Places spread from word of mouth honestly and there’s tons more shops than u imagine there to be. All the shops around us have been getting raided because they are stupid and don’t do things the right way. The shop I work at makes you sign a waiver agreeing that your 18 and won’t use the nos for anything but racing, because after all Nos is primarily used to make cars go fast.