A few things I have bought at the Pulgas for $100 pesos or less-
Pinguinos- I am a collector of pinguinos, the ceramic penguin pitchers.
I have bought two or three of em at the Pulgas for $30 to $50 pesos.
Antique china- there is a woman there, and her daughter, who have a couple of booths specialising in plates, dishes, and glassware- classic stuff, and we have bought all kinds of things from them- tea cups, plates, glasses- all quite reasonably priced, usually about as much as chinese plastic stuff costs new at stores in Palermo or on Santa Fe. But with history, character, and quality.
Miniature anvils- Okay, I admit it, I am a wierdo- but I collect miniature anvils. Got a couple of great ones at the Pulgas. I like the bronze ones that are engraved with logos and names of long gone hardware stores and blacksmith shops- they are like jewelry.
Light fixtures- there are some great midcentury modern glass light fixtures there- there was a woman who bought out the entire factory when they closed- usually quite a bit below $100 pesos.
Vases- again, certain eras of design turn up there repeatedly, I have scored some great murano glass for 1/4 the prices they want on Defensa.
I see stuff there all the time for less than $100 pesos- heck, last time I was there I got given a nice little item for free- it has to do with attitude, getting to know people, and being a small, but persistent buyer.
We have not spent thousands of pesos at the Pulgas, certainly not thrown huge amounts of money around, but we have made a few strategic purchases there, and always gotten good deals.
For instance, we really wanted a claw foot cast iron bathtub. Found one at the pulgas, that, including flete, was about the same as a bland, average, midrange stamped steel one from Blaustein.
Roperias are about the same price there, for 60 year old, solid wood, with soul, as a cheap particle board and printed woodgrain version is at a modern furniture store.
But hey- I am a fiend for flea markets, been hanging around in them on 4 continents for 40 years. I just feel more comfortable in places like that.