Modern web development
@Kugg Hm, postage? Not the most common delivery method for som HTML? :)
@quite its a subtraction race condition bug. The item I was buying was sold during checkout and all I got was to pay for nothing.
@Kugg like TOC/TOU?
@quite yes, heres the breakdown on vinted
1 make a purchase bundle and offer at a reduced price (TOC)
2 wait for an item to be sold from the bundle
3 remove the other items in the bundle (optional)
4 checkout and see price of the sold items remain in the cart without any items present (TOU)
@quite How is this a problem? You can trick someone to buy less for more without noticing.