I saw this blade mentioned several times here, and got some from e-bay...the same seller is getting rid of the rest, for $7.49 ea, including shipping (see link). I received mine in less than a week after payment.

These are super thin kerf, 24 teeth,7 1/4", labelled "framing". I might try the "dual blade" set-up on my table saw when I have the time.

If your regular supplier doesn't carry these, the e-bay option might be good, as the price is reasonable.