Hey Why pay retail prices in town at the mall when you can easily find cheap MAC make up right online. Sure if you just need a tube of lipstick, it's no big deal. However; with prices the way that they are today, you can really see the saving add up fast online if you're more than just an occasional buyer.
How To Avoid Getting Stuck With Counterfeits
The big problem that so many people who are new to Internet shopping run into is counterfeiting. The problem is particularly rife with make up, fashion accessories and perfumes. Sure they look great in the pictures but as soon as the package arrives and you take a look or a smell, you know you've been ripped off.

Don't Shop From Known Counterfeiting Hubs
Tip#1 is to simply avoid all websites and Ebay sellers based out of any Asian country and most particularly China. This might sound discriminatory to you but the fact is that they have all developed into hubs for counterfeiting and they are only getting worse. The governments of these countries simply don't care if you get ripped off. Check the contact information to see where a site is based.
Read the Feedback On Any Site Your Considering
Tip#2 Is to take the time to read all the feedback on any site your considering shopping from. Also bear in mind that a site that features a wide variety of products may have great feedback from selling products other then their counterfeit make up. So try to make sure that they have positive feedback that pertains to what ever it is that you're considering buying.
Check the Labels For Spelling Errors
Tip#3 is to ask them to email you some close up photos of the back labels of anything that you're considering buying in the way of cosmetics. “Authentic” cheap MAC make up will have “no” spelling or grammatical errors. However; Asian knockoffs are notorious for having errors in their printed material. Also try to remember that if a price is too ridiculously low, it's always a fake.