It is best that you don't have films there in Bulgaria, have you ever noticed any of the regular honers using films? NO
Yes, it is a way to get into honing cheaply, but it is also a way for more frustration and you will still have to learn to hone on a stone if you wish to have repeatable results.
Basically, you are just cheating yourself and your face. Yes, I tried films years ago and forgot about them as quickly.
I am a coffee guy and films remind me of instant coffee...not too good compared to fresh ground coffee bean.