Having worked in retail stores 14 years before taking my cuurent position as a manufacturer's rep and distributor of high end audio video gear I'd like to offer my opinion.
First a bit of background: I sell high end surround sound and Hifi stuff. These are luxury goods only purchased by aprox 2% of the population who actually care about better sound and bigger, sharper pictures and have the disposable income to spend between 10K and a quarter mil on their home entertainment system. I've held every position from plain old floor salesperson to buyer, installer, manager and even part owner, in hifi stores from national chains to single outlet salons. These days the company I work for does wholesale selling to almost every high end hifi shop in the southwest. The company I work for specializes in the high end stuff because that's what we like. Our products would be like selling Chris Reeves, Microtech and AlMar. While it's a small niche in the market, if approached correctly, there's enough business done with that 2% of the populace that we (and our vendors and retailers) can make a nice living.
A knife store is much like the kind of hifi salons I sell to and worked in for so many years. You're a specialty dealer, selling expensive products to those who care.
We have a joke in my business: Want to make a million dollars in the hifi biz? Start with two million and open a store. Our industry, like the knife industry is mostly run by guys (very much a boy's club atmosphere) who got into it because it was a hobby. It is driven by passion for things most people just don't care about or understand. Being enthustiatic and knowledgable is different than being a good business person and retailer.
When someone comes to me and say's, "hey, I just opened a hifi store and want to purchase XYZ brand of products from you for resale", my response is, good for you! Now answer a few questions for me:
1) How much experience do you have in this industry?
2) How much money do you have in reserve to fund this project, because retail stores, especially small ones with small ad budgets usually take a couple years to become profitable.
3) Where's your location? As the gentleman above noted, traffic will drive your retail business, whether walk by as in a mall setting or drive by as in a prime street corner location.
If I get good answers to all these quiestions, then we talk some more.
You will also find that you might not be able to sell anything you want. Some suppliers have policies that allow just about anyone to sell their stuff, where others want you to make certain minimum orders, be x number of miles from the next store that sells their stuff etc..
Remember that sales is a numbers thing. The more people exposed to your stuff, the more that will buy, but exposure costs money. Also consider the percentage of profit. Most retail stores need to make an average of 40% profit to keep the lights on and the employees fed. You will sometimes have to take short profit margins to move out discontinued or slow selling stuff and will occasionally make a fat sale because of some deal you got from the supplier, but after 20 years, my opinion is that about 40% is what you need. Unless you do huge volume, you can't sell cheap and stay in business long.
The low end stuff will pay the bills, the high end stuff will be there for the occasional big sale, your ego and the "Credibility Factor"(where customer thinks,"Wow, if they have stuff like TNT's for sale they must know what they're doing, I guess I'll buy that Benchmade they recommended, even though I never thought I'd spend over $100.00 on a pocket knife").
Sorry to ramble, but I felt well qualified to comment on this topic. I'd be happy to answer any questions you have about the retail experience.
jmx