The problem with this is there is no way to guarantee that you get the 10% on Buy-it-Now purchases, and they are more than likely to be from MLS buyers at 20%.
In fact, I tried this once and had a few BINs, but none that purchased through the Sedo landing page and all cost a hefty 20% commission. A lot of the offers I get on Sedo are also at 20% for MLS rather than 15% standard.