Feria San Camilo is a Friday market running from 8am-3pm. I've recently moved to this neighbourhood…read moreand I couldn't be happier that it is so close by! There are very few ferias in the very centre of Santiago Centro (I'm guessing due to proximity to La Vega) so this is a great treat. I find the prices to be on par with those of La Vega, so basically 3 times cheaper than the grocery store.
This feria is quite big, it spans 7-8 blocks, so you can really find everything you need. 80% is fresh fruit and veg, but there are herbs/spices, dried goods (nuts and confectionary), a few fresh fish stalls at one end, household goods (toilet paper, batteries, dishes, etc), a great popcorn guy and even pet food and some clothing stalls.