I think Virgin's flight prices for 5 April are absolutely disgusting, £1200 for economy and £1800 for Premium. I'm going to wait to see what airlines open up with flights to Orlando for next year. I've done a bit of research and there are at least three airlines now applying to fly into Orlando from the London airports.
Jets fan. (No taste in football teams I see

Come on the Cowboys!

)
It's not disgusting, I would surmise that this is the actual non-discounted economy fare. (Though it is too early to get a two week fare from the VA web site as its more than 337 days ahead)
This would be the price that ALL airlines have when not discounted.
This price will be showing as all the discounted fares have been snapped up by other passengers.
Looking at a 7 day fare from 5th April 2008, its coming out at £1,020.50. the fare code is "W" which is Full Fare Economy. The PE fares available £1,800 are also Full Fare Premium Economy.
I would check when its 337 days from your return date, however, it IS Easter and the first week of the school holidays, so many flights will be full. It might also be that the only seats available at the moment are the ones allocated to the travel companies, so more could be made available after the 337 days, but its premium time.
Sure if you want to, wait, have a look at non direct flights, there are many of them around as well.
but these fares are the actual costs for airlines to fly, discounted fares only appear if there are empty seats.
EDIT:
Just had a look at BA prices, they must have a few more seats available as the Economy fare for 5th Apr toi 12th Apr is £841. Saving of £200, but I would get them asap as they will soon go I would imagine.
Though with the amount who seem to be going that week, is it worth going at that time??