So Ive been a total Sephora Rouge member for like five years now so I usually just wait for the 20% off sales to stock up on my staples but honestly the discounts have been kinda mid lately and they never seem to have the really high-end luxury stuff I'm looking for in stock when the sale actually hits. I'm trying to find a solid place to grab some Guerlain and maybe some Pat McGrath for my cousins wedding in three weeks and my budget is about 250 to 300 bucks which wont go far at retail prices lol. I used to use some of those discount warehouses but I got a foundation once that was totally separated and the batch code showed it was like three years old so I'm a bit traumatized now. I need somewhere legit that actually rotates their stock.

• must be authentic (no fakes please!!)
• shipping to California needs to be under a week
• looking for at least 15-30% off retail
• bonus points if they have a loyalty program that isnt useless

Does anyone know any hidden gems that arent just the big box stores? I heard some people talking about some UK based sites that ship cheap to the US because of the currency exchange or something but I cant remember the names...