The blades are about $10 and do last a while- I can cut about 40+
windowsills out before replacing it. Although, being a fine thin kerfed
blade they are somewhat like a Japanese pull saw in the fact that one nail
can really do some damage to the teeth in short order. Get a few extra
blades when you find them. They are not the easiest things to find (at
least in my area) --dave

Thanks. The reason I was asking is that one of the local stores sells the
blades for $18 and at that price I'd hope they last a while. I always shop
local if I can but sometimes the stores get a bit greedy.