Here's the math:
I just ordered 12 packages of 2 blades each from HF online.
With my state tax and their outrageous shipping price the total came to $35.60.
For 24 blades that works out to $1.48 per blade.
Much less than buying them at Wally World or your LQS.
After placing my order I wrote to the company telling them how extremely high their shipping charges are.
There, now I am done adding my 2 cents worth. :-D :-D