Anyone interested in going to this, I could sort one or two out for a buddy pass with WestJet Airlines, Gatwick to Vancouver return runs about 200 quid with taxes. A bit risky as it is standby at the busiest time of the year. But I could let you know what flights look best etc.
It would suit 1 or 2 flexible people who wouldn't be deterred if they didn't get on, they would just go on the next flight. Not recommended for large families for obvious reasons. Pm me if you're interested I could give you more info. Oh, in case you're wondering, I work for WestJet.