I'm 26 now and have been collecting MAC eyeshadows since I was around 18 so I've tried a fair few of them. I did get my first MAC eyeshadow when I was 13 which was Pink Freeze which is a horrible frosty light pink and I remember when MAC eyeshadows came with a lid that twisted off. I've also tried and owned Paradisco, Creme de Violet, Black Tied, Phloof, Idol Eyes, Shimmermoss, and Yogurt.
The colours in my palette are:
Aqua (Matte): I admittedly have never worn this! But I'll be trying to create some looks this spring. I'm thinking it's the perfect shade for a retro 60s look.
Greensmoke (Lustre): I received this for Christmas and reviewed it here. It's a very pretty and unique shade.
Sable (Velvet): One of my all time favourite eyeshadows. This looks great alone all over the eyelid.
Cranberry (Frost): A stunning colour that is suprisingly easy to wear. I'm wearing it in this post.
Nylon (Frost): This is a pale gold that I use mainly in the innor corners of my eyes. Very beautiful and pigmented shade.
Mulch (Velvet): I reviewed this here. Mulch is a beautiful dark bronze and is a nice crease colour.
Omega (Matte): I used to use this to fill in my eyebrows but now I prefer it as an eyelid colour. This may seem boring in the pan but it's a very versitile colour and a good one to have.
You can buy MAC eyeshadows without the plastic packaging for $12 and they're $18 otherwise. My palette is now discontinued and MAC offers nicer, more sturdier palettes but they're more expensive. The 15 eyeshadow palette is $32.50 (this includes the eyeshadow insert which comes seperately), but you can also buy 2 or 4 eyeshadow palettes for $11 each.
Overall I do recommend MAC eyeshadows but they're definately a luxury product. I wouldn't recommend running out and buying 15 of them when there are cheaper products out there that are just as nice.