I pass down on collecions because I'm either not intrested, or don't have the desire to buy, and months or years later, when the product is not available anymore or it is super hard to find and $$$$$ on ebay, I see swatches or see it mentioned somewhere and I have to have it.
Alluring Aquatic (mostly for Goddess of the Sea and the lipglass, most of the EDES I liked are now perm.)
Missing out on all the EDSF's: Whisper of Gilt,etc. (Happy with SOG and OD)
Liqueur and Lust for Life l/g from Indulge
Buying Burmese Kiss from Bao Bao Wan. I've tried it with many liners and none help it look better, and the formula is too slippery for a matte.