@empty of clouds I do recall sending you like two or three 604EF nibs in a normal envelope. I cut little sections out of cardboard and mailed it. That's a bummer they never reached you

In regards to 404 boxes being on eBay, I have seen several and passed on them. A few have went for a fair price too. I consider fair to be around $5.00 max per nib for vintage. Most of my nibs come from actively having others search for them on my behalf, business owners who have no affiliation with penmanship at all. It has been tons of networking and patience, but they are still out there.

Trust me when I say I'm not in any cliques or secret groups, lol. I more often rub the cliques the wrong way instead of being part.
Also in regards to the other mentions of only having my friends have them, that is not what I mean by people I know. It would be people I know have the level of expertise and more importantly penmanship desire. I think the beginner comment is very valid in that most don't keep at it and also we have a large boom of interest in calligraphy. While I hope the interest continues, I honestly expect it to be somewhat of a fad created by online social media. This too makes me wary of just offering them up to people who haven't the desire to continue penmanship. This has turned into an interesting conversation of views.
Lastly, I wouldn't offer them as a bonus to buying a pen from me. If I sell five pens or fifty pens per month, I want it based upon the pen itself, not an incentive for the little piece of disposable steel you put in them.