I did this:
in modules.lua:
function ShopModule:callbackOnSell(cid, itemid, subType, amount, ignoreEquipped, _)
sendChannelMessage(41, TALKTYPE_CHANNEL_O, ""..player:getName().." ["..player:getLevel().."] selled "..amount.."x "..ItemType(itemid):getName().." for "..amount *...