Thanks to sympathyforthedevil who inspired this post when he commented on another thread:
"I noticed it's easier to negotiate when I have a good cheep (sic) alternative."
I realized that this is perhaps the very essence of an A-Level negotiating strategy:
Always negotiate like you have a good, cheap alternative - because you do.
This is really a self-psyche when you think about it. You don't tell your POT that you have a cheap alternative, of course. That will just make her defensive and will trigger all her "I know my worth" rationalizations. But YOU know that you always have cheaper alternatives available. Maybe not today, maybe it's a 50-year-old AAMP granny, maybe it's just your right hand. But it's available. With that mindset, you shed the stink of desperation that POT's (especially GPS POT's) are looking for. Instead, you project the confidence of your position and power: the power to say "No."
You always have the power to say no. And your POT has the power to say yes. It's easier to say "no" when you have alternatives available. They don't even need to be cheaper, especially if they are with someone objectively more attractive to you or likely to be better BCD.
How many times have we heard on this board (including from me): "I agreed to pay more because __________."?
That is the moment we likely forgot that we always have alternatives. Instead, we (and not she) convince(s) ourselves that it MUST be her, regardless of price.
Ultimately, you agree to whatever allowance makes sense for any given opportunity. If you think you will regret missing that one amazing opportunity for the sake of a few more Jacksons, then you follow your heart (sorry.... I meant dick

. After all, all arrangements end. So, the cost of paying too much can be minimized by walking away sooner rather than later.
Thoughts on the "Always have alternatives" strategy?
Life is good
The Cat