Love Greenland Market! There's little competition for a Korean Market so prices can be higher and sometimes the produce at other Asian markets can better (which is normal). Their hot food section in the back is one of my favorite places to get tteotbokki, pajeon, pan fried fish, etc. I have literally lived weeks off prepackaged bibimbap and their hot food items.
I also enjoy going to the food court, especially if nobody knows what they want and everything is extremely reasonably priced. We tried the new Chinese/Korean place called Hong Lao (i think) and the portions and food were very good, very well priced and I do think it's better than the previous people that were in that space. All the restaurants there have great and versatile items on the menu. Like where else are you going to get gamjatang for $11 or a $15 combo meal that could feed you for two meals?
I love Greenland market! It's one of my favorite places to go and fulfills many of my needs! Keep an eye open for new snacks because they're always getting more and stop in for a sheet mask in the cosmetics store on your way out (they are very helpful there too). Also, my parents love the rice cake stand and even brings them back with her to California because she says they're so good.
Definitely come check out this market, get some food and enjoy it.