There was one person honing them with tape and I hope he's got to his senses and stopped messing up perfectly good razors this way. The geometry of these razors makes using tape a terrible idea.

It's hard to tell how this one was honed, but doesn't look particularly unusual.
Still, I've found that honing out chips on these is a very serious job. I am currently working on one and it'll end up taking 10 hours.
So my advise is before you buy it make sure you are prepared to learn to and hone it, or have somebody who has agreed to do it for you.