seatbelt guide replacement

interior trim needed

I bought my 2007 Solara SE convertible used and it is missing the plastic rectangle that goes around where the seatbelt retracts into the interior rear quarter panel (driver's side). The Toyota dealer says it's only available with the entire quarter panel interior piece to the tune of about $250. The parts guy suggested a used part. Not having much luck with salvage yards. No luck on E-bay so far either. Anybody know of a salvage yard that has a 2004-2008 convertible or any other ideas? Thanks...