I'm picking up my '18 this week for $78,500+TT&L with remote start, 4 season mats and no screens. MSRP is $85,795. I set up the purchase through the Costco buying program with no negotiations.
I ordered the LC in early Sept to get the exterior/Interior combo I wanted. My dealer said they couldn't trade with another dealer for what I want because they don't have an '18 LC to give, and aren't allocated to get one for a while. The nearest dealers outside my town are either in the same boat as my dealer or 250+ miles away. I didn't want to buy it out of state and pick it up, since long drives during break in are discouraged, and having it trucked in from out of state would cost 1k or more.
Dealer invoice according to Edmunds.com is $76,700 with mats and remote start. So, Costco pricing is about 2k over invoice. I'll try to do better on the price when I pick it up, and will see what price I can get on a toyota platinum extended warranty for 7y/100k miles.
MSRP is about $1,000 less this year without screens. If you get the screens, MSRP is about 1k more than last year since screens cost $2,200. There are some minor changes from 2017, like power lift gate and maybe soft close.