How about Wembley '86 and MK '82 on DVDs with interviews on bonus disks? Or some torrents from Announce forum?
Try this for some files (not complete shows): link link link
Earl's Court is being shared in the BitTorrent section. You can also download audio concerts or whatever else is offered on Queenzone. As soon as you have 2 GB of Queen stuff you can join the hub where you find all available Queen videos, some even on DVD.