A little math, as food for thought:

Price I paid last year for AQ500 (don't have this year's price yet) $.76 per pound, local pickup.

Price for comparable Skretting product, $1.60 per pound, price
includes shipping from Utah.

Price for comparable Skretting product, $1.84 per pound, price includes shipping from northern Illinois. (Keystone)

Trying to find a local supplier for Skretting or Cargill, not looking very promising.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.