I just did the math.
BCA: $277 free shipping
PSA: $200 with $17 shipping (ignoring blems for $170 with free shipping)
That's $494 for the physical gun shipped.
FFL fees in my area are $10-35. That's pretty standard for the 4 states I've lived in.
Taxes, if you need to pay, should be under $30 for 6%.
So grand total should be right around $550, give or take.
Not the "over a thousand" , not the $713, or $675 that you then dropped it to.
I don't mean to be a jerk, but when you give someone advice on price, it's better to actually look at the items involved.
It's ok to say you over estimated. But by continuing to throw out numbers to try and justify over-paying, it's bad advice. Gonna add gas prices to drive to the store next? What hourly rate of your time will you charge? If that's the case, I'll sell you plenty of my stuff for your prices
If OP wants to pay high for charity that's one thing. But it is the cheapest, and still available, AR pistol someone can get.