For those of you that prefer to stick to high-end brands when it comes to certain (or all) beauty products, a good website to check out is:
Most of the branded products available on this site are sold at a lower price than the average market price. You may also be lucky enough to find some discontinued items from certain beauty/makeup lines (but not a guarantee.) There are also various brands of products sold on the site (like Maybelline, Rimmel, L’Oreal, etc…)
Note: for people residing outside or far from the US or Canada, shipping costs can be high.