I get it about Gun Broker. They (M1A) are cheaper in my local range stock (used) as well. That’s just a reference.
The 700s and the Win 308s are looking more attractive per spec right now. I get it that the M1A is a better rifle.
Your profile says you’re in Georgia. I’d recommend a .270 for your smaller East Coast deer. You’re not going after the heavy Muley’s at 300+ yards, are you? Why tear up so much meat by using the heavy .308 bullets?