Az International Marketplace is similar to Mekong supermarket and its is just 3' minute away. I usually go to Mekong because I get used to the way they set it up in places.
The place is bigger and has more variety in Mexican food, home storage and alcohol beverages.
The price is similar but the food at Mekong is fresher.
The customer service is not that great. The female cashier overcharged me for avocados. When I figured that out (its $7 dollars different), not even a word "sorry" or "thank you" afterward. She was rude by throwing money on the counter instead of giving me by hand. Well, what am I expecting? Whole Foods's customer service? lol,
I guess she had a bad day. This is one of the reasons why Mekong is always busier.