I live near the Boqueria so I buy there. But I think that el Mercat de Hostafrancs is better/cheaper. At M. Hostafrancs. they sell the best olives ever at a small stand on one of the secondary aisles and there is one vegetable stand on the main aisle that grows all their own crops in El Prat/St Boi and sells them very cheaply, highly recommend the artichokes in season. Also I've heard that el Mercat de Sant Ildefons in Cornellà is amazing, but have not been. There are 38 municipal markets in Barcelona, and none of them except Boqueria and Santa Caterina receive many, if any, tourists: http://w110.bcn.cat/portal/site/Mercats/menuitem.8cf34d6b720bce1e7e357e35a2ef8a0c/?vgnextoid=527f9dbc1db18210VgnVCM10000074fea8c0RCRD&vgnextchannel=527f9dbc1db18210VgnVCM10000074fea8c0RCRD〈=en_GB
