It is the ultimate manifestation of the marketplace of ideas; the more people who proffer their ideas to the world, the better the outcome will be for us all.
I have looked at these but as I am not a subscriber I can only proffer an opinion.
If you don't get what you want you could then proffer your notice.
Oldenburg must have replied to this by an offer to apply to the Society to excuse Newton the weekly payments, as in a letter of Newton's to Oldenburg, dated the 23rd of June 1673, he says, " For your proffer about my quarterly payments, I thank you, but I would not have you trouble yourself to get them excused, if you have not done it already."
The streets of their youth, the streets to which they now proffer this long player.