What to buy:
Go to Ave. des Martyrs to do your shopping, for there are several shops alongside it. Among the most popular things to load yourselves with there are:
*desert roses (but mind the fact that they are quite heavy and
you'll have to drag them back to your resort),
*Saharan sandals (10-20 USD for the best quality ones),
*local tribe garments (useful if you wish to do some camel trekking) and -- my passion -- *inevitable postcards!
What to pay: Just do not pay immediately the sum you are told -- remember you are expected to bargain (though I'm not good at it myself).
Roses of the desert are sculptured during the ages by the desert sands. They exist in all kinds of sizes