Use for those ebay cheap straight razors
It occurred to me just now there may yet be a logical reason to buy one of those Krieger or Pakistani razors if you can get it on the cheap. I remember reading in a post I started about a a practice razor and LawsonStone gave me some food for thought in his reply
We, some of us, grew up watching someone shave with a straight razor. In the bygone years children were often given play razors, or made something of their own to practice with... alongside Dad/Grandpa. I started a thread about me using my wife's specialty hair cutting straight razor and replacing the "replaceable" blades with some pieces of cut up plastic (like old credit cards). However, one might want to try this and not have a source or want to spend money simply on a replacement blade straight razor holder. I'm sure that you can still find them at large Beautician Supply Centers, but they are not in the norm of going into Wal-Mart and picking one up.
BUT... there are those NOT RECOMMENDED blades found in the wiki here that one should not invest in for a decent shave. Brands like Krieger, "German Style", etc come up on ebay for usually under 10 bucks.
One could buy one of those "on the cheap" razors with the idea of dulling out the blade and simply giving it to your son, friend or yourself to practice on getting the muscle and eye co-ordination down a little better. After all, I don't shave every day, and sometimes I go about 5 days before shaving again. So getting in practice time by actually doing is a long stretch in between times. In the meantime, you can lather up, shave with the completely dulled razor to get in that practice time as many times in ONE day as you want. You can give it to your boy to practice on next to you shaving. Your wife, if she shaves with a straight razor can give it to her daughter so that it becomes a binding thing between parent and child.
I can practice shave dozens of times before I need to do my next shave. True it does not give feedback to how the razor "will" cut, but there is a learning curve with shaving on the off side of the face with the razor WHILE looking in a mirror (backwards feedback). I have shaved my right side with my right hand pretty well at 2-3 times trying. It is my left hand and left side that are really really troublesome for me. I can practice getting down that left hand switch before I put a sharp object in my hands.
Ebay "poor razors - cheaply made" are within reason of a practice razor and certainly a LOT easier to find than some hair dressing razor and cheaper than the DOVO shavettes that Dovo sells.