Just my personal recommendations - rifle only, safe queen pricing:
AW 1.5, $3.5K.
AW 2.0, $4.5K.
AW 2.0 with rear monopod - surprisingly, around $5.5K (so few were ordered due to the cost that AI wanted for the option). Cannot be used during firing either - observation only.
AWM/AWSM 1.5, $5K.
AWM/AWSM 2.0, $6.5K.
AWM/AWSM 2.0 with rear monopod, $7.5K.
Just a note: AWSM (338LM) is virtually useless if you don't reload and want to feed from a magazine these days. So few ammo manufacturers load 338LM to SAMMI spec - it's all CIP. AWM (300WM) is where it's at - turn it into a 300PRC.
These things are worth what people will pay for them though these days, and that's the only thing that drives the market for AW's/AE's.