The market command lists characters for sale, you are also able to add your own characters.
If you want to check for a specific character you can use the following command: im.market character (character id)
Example: im.market character 1
You can also have a look at the official website if you're looking for a specific series or if you want to order the search.
You can check your market or someone's else market by using the following command: im.market [user]
Example: im.market or im.market @triformine
If you want to buy a character you just need to use the following command: im.market buy (market id)
Example: im.market buy 5000
If you want to get more informations about a character being sold on the market (rarity, level, seller...)
You can use the following command im.market info (market id)
If you want to sell your own character, you can use the following command: im.market add (local id) (price)
Example: im.market add 5 10000
If you want to remove a character from your market, use the following command: im.market remove (market id)
Example: im.market remove 45787
Tax 0, for selling a character 1 - 24'999 fuelTax 1000, for selling a character 25'000 - 99'999 fuelTax 5000, for selling a character 100'000 - 499'999 fuelTax 10000, for selling a character 500'000 - 1'000'000 fuel