I Hope you're willing to add cash on top.
FWIW.....Most of the time OEM DP's sell for around $150
You're right, new ones are about $1000 each, however the market is flooded with used OEM ones.
So if I had a set of DP's and needed oem ones for what ever reason, I would buy a used set for $150ish and then sell mine for $300-$600 (depending on brand)
There would be no reason for me to loose $150-$450.