Thought I'd add this here in this thread as it's relevant.
When I bought my flag pole, I tried to work out a "deal" with the supplier. They didn't want to deal. I moved onto another supplier of the same brand of flag pole kit. No response from them.
I have since found the manufacturer (I think) and they sell retail direct and at a better price than I paid.
Check out this 22' kit in their online store
That's the ladder mount kit. They have other styles and lengths as well.
Jim