The fair_trade_1.0b.zip file you have requested: Clear Sky / Mods / Singleplayer / Fair Trade - 24.13kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
This increases the amount of money various traders will give you for weapons, artifacts, armour, ammo, etc., so you can actually earn money in this game. This mod does nothing to reduce the ridiculous markup that every trader has, however.By default, this includes luka00's Trader Mod, but if you don't want that included, there's instructions in README.txt on how to change that.