As of this hour the forrest 10" 40 tooth, 1/8" saw blade is $64.30 at Amazon. If you search "forrest saw blade" it pops up $64.30, when I searched "forrest 10" saw blade" it popped up $84.99 ( the same blade ). I ordered the $64.30 one. No guarantee how many hours this will last. I found it looking at the best selling powertools section. It was listed at the $64.30 figure there.
Just FYI in case anyone is interested.
Gary