I'm a new player so I believe they provide you a buff of sorts that discounts the items in the main shops when you first start out. I keep receiving notifications that "Your main shop discount buff has worn out!". But then I'll go buy something from a main shop, usually doing a quest, and it will say on the page after I bought it that I saved xxxsp because of the main shop discount buff.

This has happened several times. I'm not sure if that's supposed to happen. I'll check again when I do a quest today if it happens again.

Thank you.

you get a notification on the buy page that you got the buff, it lasts for 5 hours and you get an event saying its worn out. not a bug or glitch, its normal. just pay attention on the bought page where the notification pops up like a Random Event but in a green box.

oh okay thank you! I keep an eye our for it!