German States Coppers Of 1873 - Is It A Completeable Set?

I've recently[1] been fascinated with the German States coppers[2] dated 1873. I feel these coins are kind of anachronistic; the German Empire was officially declared in 1871, and by 1873 first Imperial coins were minted (even in base metal) - but some states continued to put out their own money anyway, many in the old obsolete system.
By my approximations, there are around a dozen different coins[4] for that specification, maybe a dozen or so more billon issues (which, as I've said in footnotes, might or might not be included). I already have one - a 2 pfennig piece of Saxony (paid $11 for it, which in retrospect was probably too much).
My question is then: is it a completeable/affordable set, and if yes, how much is it going to cost me?

Just in case: if it turns out to be far too easy, I could extend this to include coins dated 1872 (another two dozen or so - some of them rare so I might have to ignore them). They aren't as anachronistic as 1873 coins, but still quite so; and they include the Mecklenburg series, which are doubly anachronistic in that they're also denominated in the German mark - a currency that wasn't officially introduced until 1873 (so, to the best of my knowledge, they're the first coins ever minted in that currency).
And just so you know, no, I don't particularly care about grade as long as the date, type, and mint is identifiable. Then again, all of these coins appear to be common enough that I won't need to go lower than Fine; and given their "anachronistic" backstory, I suspect they didn't circulate much anyway, so would be common in VF and higher.
Oh, and finally: this is a long-term project (as in, it might take years). Except that, unlike my other long-term projects[5], in this one I'm at least fairly likely to eventually finish (and yes, if you want I might consider putting photos of acquired coins here - maybe in this very thread - if it ever gets beyond 1-2 coins).

P.S. and sorry for such a long post





[1] last several months anyway
[2] I might or might not include billon issues - they're similar enough in idea, but some of these are supposedly rare, or at least very uncommon; I ignore large silver and gold entirely, as these coins continued to be made for individual states all the way until WWI; theoretically, there could be other base metal possibilities, but I didn't find any
I don't have any of these, yet, or at least none dated 1873; most of them are rare, but some of the 2 pfennig pieces might just be affordable
[4] counting all the Prussian mintmarks
[5] Russian 1 kopek type set, and theoretically some kind of US type set, are the only ones I can currently remember