Right, I understand that one point is all that's ever necessary or needed, (well not absolutely necessary but at least preferred); when I say I like to max out repair, I'm talking about a preference, not something that's a necessity.
but earlier you said
"I like to max out Repair, since on some items a few repair points can mean thousands of gold difference in price"which is not true, higher rank of repair does not save you gold.
anything with more than 2 durability is good enough for rank 1 repair. because 2*60%=1.2 which is rounded to 1. so you can keep repairing it back to 1 durability whenever it breaks.