I think if you look around you can get them for about $175 or so. I got mine on Ebay for $150.
I have a single vintage Gotham box and I wanted another one, but I don't want the new wood boxes. The Gotham boxes have rubberized cutouts inside that won't degrade like the foam will. Since I haven't found a second Gotham box yet, I figured "what the hell".
As far as cost goes, in my mind it's worth it for these mics. I wouldn't feel the same way if they were ADKs or 414's. I'd just buy a pelican.