Russ,
With some effort, you should be able to eventually find a nice Baden officer's Feldartillerie (FAR) Dunkelblau Waffenrock, or (my personal preference as they are so elegant) is a nice Überrock. They should be easily less than $1K.
However, for your OR's M15 Baden FAR Pickelhaube, this is a completely different story. Finding an issued ORs Baden FAR M10 Feldrock or a M15 Bluse will be near to impossible, and if you found one, you are probably looking in the range of $3K.
Here is some information on the M10, you would need one with black piping and Swedish cuffs, and of course, Baden Feldgrau FAR straps piped in Army Corps piping.
http://www.kaisersbunker.com/gtp/m10feldrock.htm
Here is some info on the M15, you would need it to have red Baden FAR straps.
http://www.kaisersbunker.com/gtp/m15bluse.htm
The Krätzchen you photographed is a OR's Dunkelblau, it would go with a Dunkelblau Waffenrock, so it does not match the Feldgrau M15 Pickelhaube you have. You would need a Krätzchen like this:
http://www.kaisersbunker.com/feldgrau/headgear/fgch14.htm
But once again, you would need one with Baden FAR stamps, or (better) one without stamps.
Good luck, Tony