You unpack system.mrs, open up zitem.xml and edit the bt_price value.
Heres an example:
Lets change the cost of this shotgun:
Code:
<ITEM id="6001" name="STR:ZITEM_NAME_6001" mesh_name="shotgun01" totalpoint="0" type="range"
res_sex="a" res_level="5" slot="range" weapon="shotgun" weight="15" bt_price="200"
delay="1100" damage="6" ctrl_ability="60" magazine="3" maxbullet="15" reloadtime="5"
slug_output="true" gadget_id="0" hp="0" ap="0" maxwt="0" sf="0" fr="0" cr="0" pr="0"
lr="0" color="#FFFFFFFF" image_id="2" bullet_image_id="0" magazine_image_id="0" snd_reload="we_shotgunpa_reload"
snd_fire="we_shotgunpa_fire" snd_dryfire="762arifle_dryfire" desc="STR:ZITEM_DESC_6001"
effect_id="7" />
The cost of it is 200 bounty, so to make it cost 0 bounty you do this:
Code:
<ITEM id="6001" name="STR:ZITEM_NAME_6001" mesh_name="shotgun01" totalpoint="0" type="range"
res_sex="a" res_level="5" slot="range" weapon="shotgun" weight="15" bt_price="0"
delay="1100" damage="6" ctrl_ability="60" magazine="3" maxbullet="15" reloadtime="5"
slug_output="true" gadget_id="0" hp="0" ap="0" maxwt="0" sf="0" fr="0" cr="0" pr="0"
lr="0" color="#FFFFFFFF" image_id="2" bullet_image_id="0" magazine_image_id="0" snd_reload="we_shotgunpa_reload"
snd_fire="we_shotgunpa_fire" snd_dryfire="762arifle_dryfire" desc="STR:ZITEM_DESC_6001"
effect_id="7" />
Hope this helped.