Well this kinda sucks!!!!
I wish you would have put that you were in Texas in your original post.
What part of Tx. are you in?
I live in the D/FW area and would have been willing to drive from Weatherford to Longview and Denton to Waco to pick one up at the right price (a little less than your original $300 asking price (but not by much, according to Craigslist prices in this area)).
I would've been more than willing to give a fair price for a backwards compatible unit that I could keep on OFW and (at the same time) hack the Chit out of the current unit I have.
I will assume you aren't down in Brownsville or out in in El Paso. We really are in a big state, so it may not have been that big of a loss on the timing for me.
I would much rather go to my grave not needing my gun, than go there wishing I had it.