All of my Scouts are the metals from the late 90's.
Imo they are vastly superior to the subsequent plastics. They're definitely "accurate". As for cost? I ebay'ed for mine, so the price varied quite a bit.
. . .
Edit: You know I poked around the interwebs a bit and found this page where it looks like someone had used the plastic Scouts and just headswapped them with Scion heads and added backpacks, and
Imo they look pretty nice. So maybe the plastic
GW scouts with some 3rd party parts can work for oyu.
https://mcmattilaminis.wordpress.com/2020/05/01/revelators-scout-squad/