We drove considerable miles to go to our "local" HF store... but I did get 7 packages plus one with the handle just to see what it was - it does come with three blades...
Yesterday we were in WM and I made a point to go see how much blades were in there $4.59 for ONE BLADE. That's ridiculous - at the most it's about .0000001¢ worth of steel. Talk about majorly ripping people off.
A few people keep asking about whether these blades will cut the mat. Now really, I don't GET that question. If the blade is dull enough to not mar the mat, it's too dull to use. And my mat is showing lots of wear and tear before I ever even heard of these HF blades (this is the BIG white mat from Joanns) Haven't tried cutting on a green or grey mat yet.