I found out a couple of days ago that Coinsbee added CashU for some other countries (Tunisia included) in case you're still interested in buying (NAC): https://www.coinsbee.com/en/CashU-bitcoin
You should be fine buying up to 10K Euro before being asked for an identification document.
Well, that looks good. Coinsbee is a trusted platform. Now the only remaining issue is that i can't purchase all what i need. I used the link you mentioned above and select the option to purchase 5 coupons with 50$ each, and there are only three available cards in the stock. You should be fine buying up to 10K Euro before being asked for an identification document.
Seems that only cards of 10$ are available as i succeeded to select 20 cards. Another issue, for a reseller like me because i will sell them to my clients, is the rate of those cards; 10$ card costs 11.61$ in coinsbee when i used to buy it for 10.5$ from the official Cashu reseller (not available anymore). Now i have to study the new rate with my clients before using Coinsbee. Thank you Omega . 
