Rachael F.
Yelp
MHM is an incredible local market if you live in the area. I used to make great use of it all the time during my Murray Hill days.
First of all, the deal on salads is great. You get 6 toppings, up to 2 of any given selection. Sometimes they'll let you get only 2 servings of meat, but other times you can get as many as 6. This all rings up to less than $10.
There's a great drink selection, both alcoholic and non-alcoholic, in addition to fresh fruit and veggies, baking materials, cereal, yogurt, cookies, crackers, chocolate...you get the point. You can even buy individual Ferrero Rocher truffles, sometimes Reese's, and things like that. They actually have a pretty good selection of flowers at reasonable prices too.
They make a mean BEC and pesto chicken wrap. Some of the employees don't speak the best English, but I've never had a problem with the language barrier. Once they get to know you, they'll know your "usual". They take orders over the phone which is something I'd recommend considering during busy hours.
One complaint: sometimes they, seemingly arbitrarily, refuse to deliver even if I'm a block or two away (I know, I know...I should stop being so lazy and just go get it, but this episode of The Americans is so good and I'm comfortable in my pajamas).
For a no frills, local market open 24 hours a day, this place has great prices and a great variety. I'd by no means go out of my way to make it here, but if you live in the area, this should be a staple.