Nope, haven't sold it yet, but don't really know what price to ask for.
At the moment there is a set of used front disks on ebay going for 35 quid but can't find any forks, to use as a price guide. I'll sort them all out tonight.
Any one that's interested can make an reasonable offer.
Right, got the forks, brake disks,front wheel with tyre, spindle, speedo drive and top and bottom yokes (although, I'm not sure they are from an xs750, but the do fit the forks, cos I had them on the trike) Don't have the calipers I'm afraid, sold them a while ago, and think I used the nut and bolts from the yokes on something as well, so they aren't there either.
Edit to add pics.
xs750 front end bits.
xs750 front end bits.
xs750 front end bits.
xs750 front end bits.
xs750 front end bits.
xs750 front end bits.
xs750 front end bits.