I suggest that it becomes possible to trade with parts of a credit, as in 0,01 credit. Several voodoo cards and ships are worth less than 1 full credit, and this also makes it possible to sell items for a more "precise" price, like 1,75 credits instead of 2 credits.
This also opens up the possibility for the system (admins) to tax every credit transaction with, say, 1% (rounded up to the nearest 0,01 credit). This will make more credits "disappear" from the game, causing a higher demand for credits to enter the game, and thus hopefully more credit purchases for "real" money, meaning more money to develop the game.
+1 Discussion