Mortgage rates continued higher today, edging up to their worst levels in nearly a month. The most prevalently-quoted conforming 30yr fixed rate for top tier borrowers is currently a toss-up between 4.0 and 4.125% depending on the lender. Whereas it had been compellingly affordable to pay extra upfront cost to move below 4.0%, those so-called ‘buydowns’ no longer make much sense.