A number of years ago I thought single shot would be fun. I had hunted for years with Thompson Contenders and I really liked the challenge of "one". 
I got involved with Single Shot Rifles by collecting Ruger #1V rifles. I have 7 of them and most have never been shot! Just a nice collection.
I decided I wanted to get into BPCR. Two years ago I bought a Pedersoli Sharps "Benchrest" model for $950..It was used but looked brand new. It is an amazingly accurate rifle.
I then went crazy buying SS rifles. Love them all!
Then I had a chance to buy a Uberti 1885 in 38-55 for $800 and fell in love with the 38-55. This rifle is stupid accurate with just about anything I load..Black or Smokeless.
But easily the best bang for the buck, is the various lever action rifles I bought for a couple hundred dollars in 30-30 and 32 Special and then sent out to JES Reboring and had the barrel bored and cut rifled to 38-55. I have four of them and they are all as accurate as I can hold them! Not one of them runs me more than $600 total....
Be careful, once you get the "fever" for these single shot rifles all reason goes out the window!
You can check out my collection here:
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I looked at the furniture on your websight. While I don't know for sure,  I would think that if a man with that kind of talent and access to that kind of nice wood was to build the occasional range box or tool box, he could probably trade for a lot of what you're looking at.