1. Commission or subscription: the first line to check
A percentage of every order and a flat subscription can't be compared on their headline price. They're compared on what happens when you succeed.
With commission, the more you sell the more you pay: a good night costs more than a quiet one, and the cost rises exactly as your volume rises. With a subscription, the cost is known in advance and doesn't move with service.
Run it on your own numbers: 5% commission on 400,000 DA of monthly orders is 20,000 DA. Compare that with a flat subscription, then redo the sum for Ramadan or a match night.
Ask directly: "do you take a percentage of my orders?" An evasive answer is an answer.