I have a couple of makeup artist friends who rave about this makeup. They are cheaper than MAC but just as good (maybe even better?!) and have an impressive number of colors. I haven't been this giddy about eyeshadow in a long time! When you walk in, you'll most likely walk out with more than what you planned on. I was originally only going to get 3 eyeshadows and a blush but I there were so many colors I wanted, I ended up with 6 eyeshadows and a blush, but could have easily walked out with a 10 palette.
The people working there were very nice and I was greeted right away. They helped me pick out colors for my palette when I had trouble deciding or trying to figure out which blush was best for my skin tone.
Even though I went on a weekend, it wasn't too busy and I was the only one picking out eyeshadow at the time. I can see how it can be a problem creating your palette if other people are picking out colors too because their system is different. You place the colors you want on a palette and there is only one of each color. When you are done picking out your colors, they will get them from the back for you (kind of like shoe shopping). So if someone has the color you want, then you'll have to wait.