QPD is not far from me, I have often thought of dropping by with $500 in cash to see what could be worked out. Maybe I'll drop by and see what the options are for a group buy.
If I can arrange it:
$$ / 5-10 units
$$ / 10-15 units
$$ / 15-20 units
The margins in most businesses can generally be flexible when the overall profit picture is taken into consideration. A smaller margin on 20 units sold at once is better than making full boat on those 20 sales that might take a year to materialize - time value of money (think waaaaay back to economics class)... Then again, sometimes a business owner will react on principle (especially with a UNIQUE product) and not be willing to play. It will not hurt to try. To me, in my business, every thing is available for negotiation. I often lower my fees for quick payment, otherwise I can end up waiting 60 to 90 days.