That number seems incredibly high to me. The most I've seen blades go for in any kind of volume is around $0.20/blade. Even if you were discarding them every day, that would only account for $70/year. You can admittedly buy some rather nice shave soap, but $180/year still seems aggressive.

I admittedly don't shave every day, but I've been using a safety razor since 2013. I went back and tallied up all of the purchases for materials, including my razor, and I believe I've spent a little over $200 for that entire period, so maybe $25/year.