Hi all! We've acquired a Westone x390 in Pearl White and we're looking for an estimate on value. We've done some research on the instrument but the prices seem to vary so much! The serial number is 6053351 & still has its original hard case as well, originally we had it on sale for £799, but a few customers have said that's a little too steep! Any advice or estimations would be very much appreciated! Thanks all!