I used a straight razor for many years. There is a problem with making a mistake with one; a rather final mistake. And, if it ever needs honing (and it will) it has to be shipped out to Chicago (last I knew). Instead, an old fashioned double
safetyrazor is cheap (a quality handle, and medium priced blades).
And let's address
the way women use toilet paper. Here's a picture representative of the ratio of my use of one roll versus her use in the same period:
.