Any cartridge or disposable razor is a scam. Safety or straight razors provide a better shave at a fraction of the yearly cost, for a low initial investment. Straight razors are much more of a learning curve, but safety razors are just as easy to use as a cartridge razor.
If your wondering isn’t critical to the thought I would simplify to “the monkey who might be able to see my ears” or “can possibly see my ears”. Otherwise AbouBenAdhem has the best option, though I might also suggest “The monkey whose ability to see my ears I’m wondering about”; splitting the prepositional phrase is more strictly proper but I think it reads a little better like this.