As the only direct financial link between The Kingdom of Loathing and a real-world economy, the Mr. Accessory (an in-game item received in return for donating $10 to the game maintainers) is the perfect indicator by which to measure the current exchange rate. These items are commonly used to amass great in-game wealth; players donate to receive a Mr. A and then sell it in the mall for upwards of 4 million meat. The KoL exchange rate can therefore be calculated by finding the cheapest current asking price for a Mr. A and dividing this value by 10 to find the $1 conversion factor.

For more information, including historical graphs, see http://www.nathanatos.com/kol/

* fix a crash
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