Call of Pripyat takes you once again into the vicinity of the Chernobyl nuclear reactor that exploded in 1986. This so-called "Zone" is a highly contaminated area cordoned off by the military and now is combed through by the so-called stalkers, modern fortune hunters, in search of unique artifacts. In the role of Agent Alexander Degtyarev, who is dressed up as stalker, you have to investigate the mysterious disappearance of five military helicopters and thereby stand one’s ground against the various stalker groups.
trade_manager.script for the anomaly 1.5.0 [BETA 3.0] Update 4:
a supplement to the death_manager_script but working on its own as well.
this modification rises condition thresholds below which items become unsellable, thus changes the economy and adds variety (especially to generic npcs who may outright refuse to buy anything). it is done by
 replacing buy_item_condition_factor values with:
- 0.75 for mechanics and traders;
- 0.85 for factions' traders;
- a number* in the range [0.5, 1] for other npcs.
 then they are:
- increased by a number* up to 0.09;
- decreased by 0.01 for each full 1000 of goodwill between the npc's faction and the actor.
* these pseudo-random numbers depend on characters' ids and are (during a given playthrough) static.
although buy_item_condition_factor values found in config files are (generally) not used, they are still read and mechanics are recognized by them.
a keep word added to the buy_item_condition_factor value in the config file prevents it from being replaced (additional  factors are still applied).
copy, move or paste the gamedata folder into the game main directory (where the fsgame.ltx is).
allow any folder merge/replace if asked; any dialog about replacing files means that this is not compatible with whatever already installed.
savegame compatible, no new game needed.