Agreeing to pay rent up front or enter into a lease usually can secure a discount…your landlord obviously isn’t interested in that. Other ways are agreeing to do the repairs and maintenance (as opposed to the landlord paying for it – sort of sweat equity rent). Other than that, I can’t think of other ways to secure a discount.
In answer to your other post, if you keep exchanging, you’ll never pay taxes and you can crank out some of your profit/equity via financing. But if you sell, you get hit with recapture and taxes.