If find yourself down by the Cais do Sodre train station, look across the road and you will see the Mercado da Ribeira. This is a large market, topped with a Moorish-style dome.
The cities main food market is open from 6am, selling everything from inky octopus and fresh seafood to fabulous fruit and vegies. On Sunday mornings there is a Collectors fair.
The 2nd floor of the market has been converted into a touristy 'cultural centre' and it sells locally produced items such as port and honey, and also sells handicrafts.
Portugal wines is so much different and good, that it is worth to take a closer shot while your stay and fill your wine cellar with some good bargains.
This shop is my best choice in Lissabon
Also, they do have best shipping offers.
What to buy: All kind of Port wine, red wine, white wine, vinho verde........
The website does show only a very small part of what the shop offers.
What to pay: All kind of wines. They are able to order and deliver any wine from Portugal. They are very kind to be after it.
On Tuesdays and Saturdays it's worth to visit the Feira da Ladra, a flea market where you can find almost everything: Portuguese firemen T-shirts, clothes from African ex-colonnies, old magazines, records, books...
It's very close to Alfama quarter, which is a must in any visit to Lisboa. You'll have a good time and there are a couple of monuments at walking distance: San Vicente de Fora and the Panteon Nacional.
What to buy: Los martes y sábados vale la pena visitar la Feira da Ladra, un mercadillo done se puede encontrar casi de todo: camisetas de los Bombeiros voluntarios portugueses, ropas procedentes de las ex-colonias africanas, revistas viejas, libros, discos...
Esta muy cerca del barrio de Alfama, que es una visitas obligadas por Lisboa. Puedes pasar un buen rato y hay un par de monumentos en las inmediaciones: San Vicente de Fora y el Panteón Nacional.
What to pay: Cheap
This domed market across from the Cais do Sodre train and metro station is jam packed with wiggling fresh fish and blooming flowers. If you're in the mood for some fresh fruits, the selection is also great.