Well, it just doesn't work.
About 20 or so years ago I was stumbling along the aisles of a gun show. There in front of me appeared a gun that was the holy grail. It was a Browning B78 in the black powder version. It had the very heavy octagonal barrel, with all the fancy levels and stuff on it. Better than that, it was priced very reasonably at $1100. The only problem being I only had $300 in my pocket. I tried to get the guy to hold it for me until the next morning, but he would have no part of that. But it was there as they were closing up for the day.
So I drove home begging my poor little wifey. She was a good sport about it and we took a drive, at each place getting as much cash as we could get (a couple of credit cards and some borrowing). It got me over the required $1100, but I felt for certain I could get the price down a little. So at the opening bell the next day, I was about 2nd or 3rd in line and hit the door at a dead run. Took a cut that would make most running backs proud and arrived at the table. No gun. He'd sold it to another vendor a few minutes earlier, before the riff-raff (general public) was allowed inside. So I drove the 50 miles back home, a defeated man.
But I swore I'd learned my lesson and just started building a stash. The problem with doing that is you come across a great gun a couple of times a year. Before you know it, you've sunk a real bundle in your guns. And its very hard to get that money back out. We're not talking profit, we're talking escaping with your hide. Its how you live and learn.
There are outstanding deals to be had at almost every gun show of any size (and the small ones are even better at times.) And in all fairness, its fun to attend a show with enough jack in your pocket to buy any gun you want. But after you do that for say, 20 years, and you visit a dozen shows a year, soon you own too many guns. So you enter a phase called "the sell-down". Where you just offload all the mistakes you made or the guns that no longer interest you.
Guns have gotten pretty darn expensive over the last few years. I'm guessing its because people don't trust the stock market and can't get any kind of interest on their savings. So they look to unconventional items, and guns are a good one. So as long as the roof doesn't leak, the kids are fed, and your wife is happy (how's that going to happen?), its not all that bad a place to lose a few percentage points a year. At least you feel warm and fuzzy if you bought well. But all that stash of hundreds does is tempt you to buy guns you've always wanted. And then you need to replenish it again so the cycle can continue. Be very wary, what really can happen is you buy more guns than you "need".
