Hi, it is almost impossible to find a barber hone for less than 25$, shipping to Spain. I have no stones, and use to use a balsa wood with pastes. I am curious about this stone:

10,000 #Grit 100*20*10 Sharpener Natural Green Stone Whetstone Oilstone Polishin | eBay

It worth 25$? Can I use it as a barber hone for the touch ups?

Thanks in advance for your opinions.

Greetings from Seville!