An anonymous reader writes "How much should game developers be charging for DLC? It seems that one indie dev has decided to carry out a unique experiment. The latest expansion pack for Gratuitous Space Battles is priced at $5.99 — or is it? It turns out there is both a standard ($5.99) version and a discount version ($2.99). And the difference between them is... nothing. The buyers have been left to make their own decisions on whether or not they should pay full price, and send more money to the developer, or treat themselves to a deserved discount. The buy page even lists comparisons of national incomes, average salaries and even the price of sausages to help buyers make up their minds. Will this catch on? Will Microsoft start asking us whether or not we should get a discount and trust us to answer honestly?"