Tuning pegs
This is a real pair of balalajka tuners!
I bought them from Imperskaya for $22 and the price was $27.99 including the shipping. The seller believes that they are made out of brass and that they then have been chrome-plated. In the begining of my project, I made some simple test, which seem to confirm this.
To see other alternatives to tuners please take a look at other existing electric balalajkas.
Total cost: ≈ $28