It seems like it might also reduce processing fees to payment processors that charge a flat fee + % of sale. Notably I believe PayPal does this. Here, they wo

It seems like it might also reduce processing fees to payment processors that charge a flat fee + % of sale. Notably I believe PayPal does this. Here, they would still get their percentage, but would only get one flat-fee for many purchases where before they would have gotten one flat fee for each purchase.