You numbers are right. I just checked my stats on current project: 101 LoC per day. On this project I have ) incompetent PM, so ticket descriptions are vague thus I need to manage ticket queue by myself, ) hard to reach product owner, so I must figure lot of things at my own, *) no dedicated QA team, so I need to write test scenarios in addition to automatic test cases and then perform them manually, etc.

> Are your fixed-price estimates based on LoC?!

I don't now. I was not a part of sales.

> Else, why aren't you embedding that knowledge in a corporate library ("contractors tools") which you license to all your future customers?

Because each customer has different requirements, different goals, different language and framework. Nobody wanted to pay for a library.

> If you write 1KLoC/day then you're likely generating 2 post-release defect bugs per day. That's in addition to bugs your QA team catches.

In practice, I had about 1 serious bug slipped per 1-2 weeks. Professional QA team known a lot of corner cases to test already. Professional developers know them too, even when writing in a different language using different framework. Moreover, we know how to prepare good CI, efficient automated tests, how to write efficient documentation, who is responsible for what, etc.

> Your numbers are so far outside of industry standards and academic findings that, with 20+ years of experience, you must know they are exceptional and difficult for anyone else to accept on your simple say-so.

How much I will be paid if you will accept my story? :-)