Need new Driver Seat in 06 SR5

So I bought my 2006 SR5 DCSB 4x4 last September and one of the first things I noticed was the driver seat is broken down. It only had 54k on it when I bought it so either the guy was hefty or just sat weird. I feel the frame of the seat in my lower back and the lumbar support is broken down to where you can barely feel it.

So two questions;

1) Can anybody recommend any after market seats they like over the OEM seats?

2) Where would be the best place to try and source OEM seats (preferably from a Sport or TRD OR) and what kind of price do y'all think I should be looking at?

Thanks in advance