Not that I've been on the farm long, and currently not producing anything yet but I DO have a business I run from home and my education/expertise/passion is business and marketing... so here's my thoughts:
One of the keys to making it work is not only lowering your cost of living but producing the highest value product for your time. There are, yes, the items you can grow and produce at home, and then sell locally, but unless you live in a high cost of living area, you won't be able to get top dollar.
The key, IMO, is to be able to produce a product you can sell long-distance to those who are looking for such a product, leveraging the internet. Or, in other worse, live in a low cost area while selling a high value item and a high price to those in a higher cost/income demographic than what might live in your area. It's a downhill battle if you can accurately identify products or things people are already searching Google for, because there's an existing market.
Unfortunately, this also means that if your items are a processed food product, you can't sell across state lines without expensive licensing, but there are so many things that can be made or produced on a farm, with land, etc. that are very marketable online.
For example - how many people have thought about selling homemade
soap? Homemade soap sells for about $6 for a bar, which is the lowest price I'd personally pay without beginning to have doubts about the quality. A lot of people in poor areas, however (which is where you usually find the best land prices!) won't pay that much for homemade soap. So you sell online, but soap isn't an easy sell online because people like to smell it first. Or you travel into the city to sell it there, but then you've got to deal with, well, travel. And, no, there's not a whole lot of profit in homemade soap (use to have a soap business, wouldn't do it again). So, really not that great of a "bang for your buck" (or hour, as it were).
Taking the same general industry, however, there's lots of potential moneymakers in the skincare industry. For example - I have a Piteba seed/nut oil press, which IIRC cost me about $150. I can plant some styrian pumpkins (hull-less), harvest the seeds, run them through my press for some beautiful pumpkin seed oil - and could use it or sell it as-is, but I'll get the most bang for my work if I add some essential oils, package it up in a nice dropper bottle, and sell it online for $50 an ounce (or even half ounce) as a high quality, natural upscale facial serum. The press solids would go to feeding the
chickens, along with the rest of the pumpkins (not much flesh on those). That's shit-tons better turnaround on my time, since most of the work will be in growing the pumpkins and pressing the oil from the seeds.
There are tons of people who will pay top dollar for something like that - naturally/organically grown pumpkin seed oil, high quality, minimally processed, etc. Most of these people live in big cities and have higher incomes than your average rural person shopping at a small town farmer's market... which is why I tend to shy away from considering products I can sell at my local farmer's market.
The biggest problem with this, or common obstacle if you were - is that most producers are not marketers, and they run into several issues because of it:
1. If you want to sell a high end product at a high price, you have to have high end packaging and presentation which is not always easy for farmers/producers to do themselves.
2. Most people who are making a product for sale, are not wealthy already, and tend to be more frugal, and so they often underprice their products because they are assuming their customer thinks like them.
3. Related to #2, people often think they have to compete on price, which is always a losing game. If you create rabid fans for your products, you don't have to compete on price - but you need to have a really GREAT product that they can't just go buy anywhere else. How you set your price says a LOT about your product, and if you undervalue your product, so will your customers.
I have reminded more than one person that if Prada can charge (and gets!) $3000 for one of their purses, there are certainly people willing to pay top dollar for a handmade one (especially if it's made from leather from your own cows that you tanned yourself!).
I think that's it for now. This is actually a topic that is near and dear to my heart, since I am both business/marketing minded as well as a
permie. One thing that also often gets overlooked is that in order to make a good living on your farm, it doesn't necessarily have to come FROM the farm. For my business, I custom print photographic, personalized, and monogrammed coffee mugs, luggage tags, and phone cases. I do some bigger local shows but 90% of my business is online.
My business has nothing to do with my homestead or farm, but I sell a high value product, domestically and internationally, and I can make enough in 20-30 hours a week to support my family (because of a very low cost of living) which allows me the
freedom, time, and (hopefully soon, as I build things up a bit after my coming divorce) the financial resources to be innovative with my homestead. And in my case, I can be the single mom supporting three kids on a less than 40 hour workweek without having to punch a clock for minimum wage or have my kids be raised by daycare employees... absolutely priceless.