When I ought the Tundra in 2014 I waited for a model without all the nav aids, base radio (it is very nice with BT, steering column controls, sat capable - beats my Pioneer Super Tuner days
), cloth seats, etc.
The only extras I wanted were a back up camera (unbelievable time saver if you tow a lot) and heated seats.
There was no "package" with heated leather seats that wasn't at least a 4k upgrade of stuff I did not want.
I ordered the leather seats separately for just over 1k and they installed them for free since I let them keep the old seats.
It can be done, you just have to want to wait on what you want.