This is an area that interior painters can easily cut short to save time. Most contracts don't state the extent of the wall repairs included, so it's up to the painter's discretion how much they will do. If it seems like too much work, they'll usually point out the repairs but don't include it in the bid. They'll then ask you if you'd like it fixed after they start your project and let you know how much more it will cost.
Watering down the paint 50%? It will not cover. I am a contract painter and found that most people that I make a contract with immediately try to change the deal and get more than they are paying for. Sometimes, I let them cheat me as they may have other work that I wish to do but other times I put my foot down. I try to get the client to look at what I have done each and everyday if I am going from room to room. I cannot do this If I spray the entire project at once. Even when I have them inspect my work, they often just do not tell the truth and wish to scam me the contractor for more and more while paying the same as the original contract. Most people have not a clue how much work is involved in painting a house and just assume that the painter rolls out the work with no prep, sealing off the place to protect things that are not painted. All of my contracts state that if anything is in the way like babies, dogs, cars, plants and furniture that I cannot proceed and that it is their responsibility to move this stuff. I always seem to be turned into a furniture mover and never get paid to wrench my back. Fact is most people try to rob the contractor and this article tries to make it seem that the contractor is robbing the homeowners. My sister is a prime example of this as she always goes for the lowest bid yet expects a world class job. This means if you pay $500 for a two day paint job do not expect the contractor to live at your home for two weeks and make only $500.
In England, little is known of the trade and its structures before the late 13th century, at which paint guilds began to form, amongst them the Painters Company and the Stainers Company. These two guilds eventually merged with the consent of the Lord Mayor of the City of London in 1502, forming the Worshipful Company of Painter-Stainers. The guild standardised the craft and acted as a protector of the trade secrets. In 1599, the guild asked Parliament for protection, which was eventually granted in a bill of 1606, which granted the trade protection from outside competition such as plasterers.
Even if you go it alone, specialize to keep your initial investment low. If you do only interior painting, for example, you might get by with one ladder, a few brushes, rollers, basic hand tools and such, for an investment of less than $300. Again, you can add to your tools as you need to (every job is a bit different), and parlay profits into the equipment necessary for exterior painting or working on large commercial properties.