You gain the buff Main Shop Discount which gives you 15% off the items in all npc shops.. I was restocking when I got it so I am not sure if it is a normal random event..But I have the 30% discount card so 15% is no good to me but it is definitely nice for whoever doesn't

The buff is glitched, I'd recommend not buying anything from main shops until it's fixed.

I don't understand what the buff is but I already have my 30% discount card in my inventory I bought years ago I also just noticed the 1% interest that lasts a month is this for the vaults??

Oh. Whoops. I was just doing a quest and the buff popped up when I bought an item. I'll refrain from buying anything else until it's fixed. Thanks for the heads-up!

The buff runs out.Mine says has 5 hours left ...I see you have a discount card in your items! I give you the discount price of 1,399! Runny Nose Pizza Slice has been added to your inventory. Your main shop discount buff gave you 15% (353) off the main price! does this use my 30&% card and another 15% buff?