Depends what you smoke. Always beware of sellers on the beach etc. as their cigs are often counterfeit and taste like ****

I usually stick to Royales (similar to our Supekings) and they are about 2,400 dinars (2 dinars 400 millims) for 20 (roughly £1.25). Mars are cheaper and Crystals, very popular with the locals, (about the size of Weights) are the cheapest. I'm not sure of the exact cost, but Tunisia is definitely not the place to go if you are trying to give up smoking.