Moneygram and WU charges a fortune to send money overseas. Tunisia is not on the list of preferred countries with discounted fees. You are therefore expecting the sender to incur the following losses:
1. 2% fees below XBT market value AND
2. WU or Moneygram fees well in excess of the 2% trade fee AND
3. Currency exchange fees.
I just checked and it looks like that MoneyGram is charging $36 for an $1,800 payment to Tunisia, which works out to be 2% (not 'well in excess of 2%).
I have no idea what kind of spread MG will charge for currency conversion, however I doubt it is higher than 1%, so with the OP's fee, a potential seller is looking at roughly a 5% discount in total.
When I buy bitcoin from others, the smallest discount I will consider buying at is 5%, and I would make the seller cover any sending fees/costs, so I would consider the OP's offer to be fairly competitive.
The OP remains competitive when looking at offers on LBC.