Market order prices now can be set with 0.001 precision. However, all real credits transactions still work with 0.01 precision, i.e. when you execute a deal, the resulting transaction ( amount * price ) is rounded up. You cannot execute a deal for a total amount less than 0.01 credits, the Game.market.deal method will return ERR_INVALID_ARGS .

This means you can sell/buy energy for 0.001 per unit, but with amounts not less than 10 energy units per transaction.