If you can buy for a huge price discount by just converting your fiat into LYN tokens. Wont you buy the tokens to get the discount?
With LOW token supply and HUGE adoption you will achieve the opposite of an asset that everybody wants to spend. Think about it.
That also means that nobody wants to spend it and hence it will not efficiently work as a medium of exchange, which in turn hinders its utility to grow. Not an easy topic, believe me!
Up to 80% off sounds a bit fishy, but who knows, maybe it is right. Often they just use that to lure customers into their shops, but then there aren't any decent products for such discounts. Not your fault though if they do it.