[Walking over to take a better look at the stone column, he also picks at the price tag on it.]

Well, it isn't terribly expensive, [it's expensive] so, why don't I buy this for you, as a sort of token for today. You've set aside and given me your time despite knowing who I am, and I'd like to show my appreciation for that.

[He smiles at the architect, with that same fox-like demeanor that doesn't reveal anything.]

If you want it, it's yours.