A “standard large pizza” is 14", the size of their small; 16" is a common extra-large size, their large is 18” (1.65× the size of a “standard large pizza”, by area.)
$43.20 ($40+8%) is quite reasonable for an 18" multiple topping pizza.
Thanks for helping remind me of the Bay Area / tech wealth bubble. Meanwhile the first pizza place I find with good reviews elsewhere in the country has a 18" multi topping for $25, and two 16" for $37.
Sure, i'm not commenting on the tastiness. Just that I remember balking at the $40 I spent for a pizza there, and am surprised that anyone thinks the prices are "reasonable" when it's likely one of the most expensive pizza places in the entire country.