if ($2 == dchain) && ($3 < $calc($eval($+(%,dc.,$nick),2) + 1)) {
var %money = $calc($3 * 20000) 
/inc $+(%,money.,$nick) %money
/dec $+(%,dc.,$nick) $3
/notice $nick you sold $3 Dragon Chains and gained %money gp .  
}