I see you also go to West Coast Toyota.
The part prices listed there are all MSRP.
It is interesting that your part number 00279-16QTE-01 for TGMO 0W-16 is different than my 00279-BLK16-01. Mine has an MSRP of $4.65, and yours has $7.63.
Perhaps mine is bulk oil as the BLK in the part number suggests. Yours has QTE, which means quart. They didn't use to have bulk TGMO 0W-16 in the past, but perhaps they have it now. I wonder what happens if you order 5 quarts of it online and show up at the dealer to pick it up. Perhaps, you better bring an empty 5-quart jug with you, but then you don't know what they actually fill it with.