Thats you shop, depends on where your at I guess. I have 3 places in little old Delaware that I can go get them right now.2 have replacement blades.How do I know you ask? Cause I was in all 3 yesterday
So scratch my back and I'll scratch yours (figure of speech)

. Get me two packs of replacement blades for the 2 blade....and I'll send you one set of BHs.