Yes but what can one expect from people without culture and living in very poor conditions, not an excuse but this is also inmoral I avoid them all the time specially Peruvians and Bolivians is a pitty b ut is true.
Going back to Celia anoher possibility is buying at Eki on San Juan and San José at 2 blocks away, 1st brand milk is cheap, sparkling water as well, vegetables are not cheap, cheeses are expensives but you have prices in front of you and you pay for what you buy, is clean with air conditioning and reliable.
greetings
Reina