You say "maybe we're just lucky.!!"

I don't think so - relationships with dealers depends also on how they perceive you, and a reputation for being fair to all you deal with is something earned - and definitely not to be abused.

The reputation of being a fair dealer is carried on over one generation and into another, just as being a "pain in the ....s" is also. 

I consider it an honour to be well regarded by the businesses I have dealt with over my 50+ years of farming. I know that any fair request will be dealt with in the best possible manner.

I just noticed the word "trust".  Absolutely!   If those you deal with can look you in the eye as they deal with you, that is worth immeasurable value, in my eyes.