Charles F.
Yelp
This one of several large indoor swap meets. Let's be clear, there's no swapping going on. It's a straight cash homie transaction. What you are going to find is just about everything from magic pills to 'cure' your baldness to live birds to trinkets and all sorts of knock offs
If you know that going in, that's half the battle.
PRO-TIP 1: If you haven't figured this out yet, you will be the ugly tourist, you need to greet everyone who greets you. Just don't do the simple head nodding as it's disrespectful. A Buenos Días or a Buenos Tardes is going to go a long way in securing a good price for something you want.
PRO-TIP 2: watch your belongings. It's not uncommon to get bumped into. Either way your daypack sling over your shoulder and the front part in front of you or keep your wallet and your phone in your front pockets. Matter of fact, if this is your first time, I would only bring a selected amount of cash and leave everything in the hotel room
While there are some vendors that will take credit, I would warn against it.
Walk around and get familiar with your surroundings. It's not the Grand Bazaar but Mercado Libertad can be just as confusing as each corner begins to look like the other.
At the very top is the food court, I can't recommend a single place and while there might be a few hidden gems, I would caution against it especially if you are a foreigner
Once you have your bearings and you have taken mental notes of things you want to circle back, it's time to play, "Let's Make A Deal"
You'll be quoted prices. Don't freak out but also be prepared to walk away. This is especially true when dealing with knockoffs like jerseys or luggage. If it's an artisan craft, your chances of bargaining are fair to midland
One vendor will quote you 200 pesos for an item, and another will quote you 250'pesos. The vendors will not match so if the other vendor has you at 200 pesos, just go back to that vendor.
PRO-TIP 3: Quoted prices will change day to day. If you go on Wednesday and the item is 200 pesos it may be 250 pesos, the next day. Here's your chance to bargain. Keep in mind that the person you dealt with yesterday is not there today so your argument may fall on deaf ears. It's up to you on the price. For 50 pesos, $3 USD difference it may not be a big difference for other items and their prices it maybe. You decide.
Mercado Libertad is the ultimate in shopping for last-minute keychains or those magic pills to grow a third arm. It's a sight to experience just make sure you're prepared before going on a ride instead of being taken for a ride.