But that's what you do at a festival, spend money! You should see when the state fair comes around, fat hillbillies tripping over each other to throw money at the deep fried butter stand. But in all seriousness, the items Bungie is selling in the festival are either useless, have an expiration date, or just an alternative version of items you can get fairly easily in the game. It's just a net to catch fools. No different than a restaurant selling a 'value meal.'