I ordered a Mark IV short head shell direct from Mesa about four weeks ago. I was quoted four to six weeks for the shell, but it arrived in one week! I ordered orange bronco, tan grille, tan corners and tan leather handle. Once that was finished I ordered a new wine red headshell for my DC-2. Once again, I was quoted four to six weeks and it arrived in just a little over a week.
This is what it cost me:
Short Head w/Standard Black Taurus (no reverb)- $249
Reverb and fan installed - $59
Custom Tolex - $179
If you are considering this, it is easier (in my opinion) to pay the extra $59 and have them install the reverb and fan. You can specify what logo, corners, and handle you want. I had the vintage Mark I logo installed on both of mine. I will try to post some pics soon.