Answer– $200

Explanation-
For the rest of the product he got the money he should have got, so the only loss is the stolen $200 bill

For                  Expend    He Got      Profit/Loss
Stolen                 $200           $0           Loss   $200
Product Sold      $150          $200        Profit  $50
Return Change .   $50           $0           Loss .  $50
________________________________________
TOTAL                                                LOSS $200

The answer must be EU…a+Antartica, NA = north america, SA=south america,…..