I didnt see any negative feedback and as the penultimate post says, what I saw was reality check.
My company has been in the fortunate position to give people a go on several occasions, when they came round with their CV's and asked for a job when there was none advertised. We respect that, and if we see an oppportunity that goes both ways and can make some room for someone new, we take that opportunity.
Also and because you didnt give your background earlier, while you seem to think the idea of pounding the footpath looking for a job in coffee industry is a waste of time, now that I know you are working as a coffee machine tech I think it is advantageous to you when knocking on professional coffee roastery doors. If you knocked on my door looking for A job, you would be a very very serious contender even without any positon advertised, because of your related trade...
I know Will N and he has been selling equipment for some years. You mentioned that you thought the price for a 5 kilo Turkish roaster was a little high, and I merely informed that they are bottom end roasters. From there the price only goes up. Peter W can suggest better roasters, and the price will be higher. Note, people that sell and commission coffee roasters dont hold your hand and teach you how to roast coffee. All they show you to do, briefly, is how to operate the equipment. Equipment operation and expertise in coffee roasting are two different things.
Another reality check here. There is nothing stopping you from "affiliating" yourself with a commercial professional coffee roasting business and offering their / your product to your clients. Whether you do it that way or roast it yourself, you can expect that once other roasters cotton on that while you are servicing their clients equipment you are also recommending another coffee supply, the referred work from them will dry up. Its a risk you take either way.
Also, think on the capital investment required to start up in roasting, and calculate what kind of turnover will be required to eventaully get your money back, and I think you may find it is a lot easier to become an agent for a professional roasters brand OR, have coffee packaged for you under your name and forget going into your own roasting where you have no professional expertise and will take considerable time to pay back the investment if ever in this market.
This is not negativity, its reality, and when you ask for advice, you have to be prepared for whatever replies the wind blows in.
Good luck in whatever you decide, you have chosen a very tricky industry to become involved in at this time, and I dont see why anyone would think there is any natural progression from repairing coffee machines, to coffee roasting. If you like the idea that is a different story, but there is no progression from one to the other that I can see.
Please do not mistake blunt honesty for negativity. You ask the question, presumably you want straight replies.
Hope that helps.