would I tell you so you adjust what you want to pay based on my profit margins?
That's just business. If you are selling a car, not even buying just selling 95% of the time you'll be like "I bought it for 25k, had it for 8 years. Put in a new transmission a year ago that was 6k. The engine is healthy had all the regular check ups and such, i want to at least get 16k for it."