I agree. A home owner is always willing to pay sometimes more than 4 times the original cost to have the same job accomplished multiple times.
When the original contractor returned, they were not doing you any favors. They were trying to scab the job as quickly and cheap as possible. I never offer any type of warranty, I take my time and do the job right the first time. I always give my word that the client will never see me, or any other person there to work on the same contract. And I get a lot of repeat work from the same clients. And I do this work usually for less than other contractors. I rarely charge for my time. I am not doing it to make money. I'm doing it to teach others about proper practices. I do this work because I enjoy it, and I love teaching others.
Like Chandler stated, real quality work is not inexpensive, cheap quality practices and using low quality material is. And the truth is, it does not cost that much extra over all to use better quality material and perform high quality practice. I love the t-shirt. If I wore t-shirts I would purchase one like that.
For example. I hired a tile contractor for one of our bathrooms. I have not tiled anything since the 70's, so for what I paid for white marble tile, I wanted someone that knew what they were doing to install it. I had them build a small half wall at the end of the walk in shower, and also a seat in the shower. They brought pressure treated wood and regular screws. I had listed only cedar and stainless steel fasteners were to be used. Pressure treated should never be used in any living area, acid and chemicals are used in the treatment. And even galvanized fasteners will corrode and rust. Even though the entire room was coated and covered in a water proof coating, I did not want any fastener to fail due to rust, or any wood to not be able to withstand water.
We have a large free standing planter box that I built more than 20 years go, using only cedar and stainless steel screws. It stays out in the direct weather all the time, year around. Snow, rain, sun, cold and heat. Even with top soil in it, there is no rot or rust on any fastener or in any piece of lumber. And it did not cost nearly as much as I have spent on this particular bathroom. You always get exactly what you pay for. And I really hate paying for something twice in a lifetime.