With MAC, you have to move fast on their new collections, or you're left in the dust. They do know they've got you. I think that stinks for the pros. Trust me, MAC gets a TON of money from the pro buyers. Their free shipping policy for the pros is kinda stingy. The only reason I would buy on different days is either that they don't have the items I want listed all at the same time, fear of having buyer's remorse a/k/a impulse shopping.
I think a huge portion of cosmetic purchases, is impulse shopping. Makeup is so near and dear to our heart. It's like a quick fix! If we all really took an honest look at what we already have, we could probably do without making a purchase for quite a while, except for items like brush cleaner, facial cleanser, foundation. I am guilty of this too! I have been wanting (but not needing!) a Bite lipstick that I noticed that my local store doesn't carry. Well, instead of just buying the Lavender lipstick, I figured if I purchased Vento (adding yet another pink lipstick to my lipstick arsenal) plus an extra pencil sharpener, then I would have free shipping.
If I remember correctly,
my pro shipping is free after $150.00. I am glad that Sephora's free shipping kicks in at $50.00 for everyone. I think that is more fair.