In the big bores it is pretty tough to touch a new one under 12k now, more like the 15 range, used that I've seen lately, are 10k+ for the most part. And most of those are base level guns. Sabatti & FAIR are a bit cheaper, even Sabatti went up since they fixed the regulation issues, about 8k US as I recall seeing lately. Just be careful if you see a used Sabatti around, still some of the bad ones around, but, some of them shot OK too.
I spent a year researcjhing what I wanted and what I wanted to do with one, decided I didn't want another big bore, had a #1 in 450-400NE, did quite a bit with it in the time I had it, very versatile cartridge in that platform. Had decided I didn't have a need to go to Africa, so got one more suitable for hunting in Canada. ordered 2011, got late 2012.
Wanted something like a 300H&H, rimmed would have been cool, but, Chapuis, Verney-Carron and Merkel or Krieghoff wouldn't build one.in the rimmed version. Fella at Tradexx essentially talked himself out of a sale on a Chapuis, citing some regulation issues, VC was definitely in the running. Merkel dealers at the time didn't seem cooperative, John @ Wolverine was awesome to deal with though. By the time I got to him, I had decided a K-gun was worth checking into, they regulated as far as 90m, which I wanted, as I'd decided on a 30R Blaser for the chambering. There was ammo and brass avail, dies were custom order.
The other thing I liked on the K-gun was the decocker setup, they've had it long enough to have all the bugs worked out, and I have a Merkel K1, that is opposite to a K-gun in operation, have to take safety off to fire, K-gun is cocked and ready upon closing, if you have it set at decocked, quick push on safety cocks it, it works really well, or if you open it, it closes cocked and ready to shoot, no screwing around with the decocker. Blaser is on safe when opened and closed, same as the Merkel I have. I really liked the wood on Blaser and Chapuis, but, one I wouldn't buy, one I got talked out of. Thought about a Chapuis in a 6.5 or 7mm, maybe even a 30-30 many times since though.
For the K-gun, I wanted the Big 5 stock, that was a wood upgrade too, swingoff scope mount and regulated with scope, tried for a 3 leaf rear sight, won't work with Recknagel swingoff, got 1" and 30mm rings, wanted a peep and got that, has regular irons too, that stuff added 3500.00 to the gun, landed just under 12k, plus the dies, brass, some ammo to start with, and a Swaro 1-6. Bought a Leupold Deltapoint since then and using that at present, good for 200, think I can stretch to 300 yds. Was regulated with RWS 185gr EVO bullet, got 350 of those thru CSC last year, all they could get. I was trying 180's of various flavours, as I thought that was what it was regulated with, that's what I'd asked for, was not working. Looked at what RWS was actually selling, no 180's, 185. Lightbulb came on finally, found some ammo locally, tried it, Voila. That worked. Also added a spacer to lengthen it afterward, originally used shotgun measurements, too short, and I put a red pad on it, much nicer to shoot. 30R isn't a little cartridge, about like a 30-06 AI, and if not held right, lets you know it. K gun has a set trigger on the front on a std Classic action, takes a bit of getting used to as well. I'm happy with how it all turned out, good solid gun, works really well, great to carry and a pleasure to swing and hold on target. I wouldn't have any issues with recommending it to someone else.
I did the bulk of my reading up on Accurate Reloading, they have a section devoted to doubles, and some good people on there, also got good info when asking originally, on the 24HR Campfire. Lot of the same folk from AR post on AH as well.There are some folk on AR that know their stuff. Graeme Wright's books on doubles are worth having around, too.