I could be wrong, it could be that they're going to be £150 normally but you get a special price if bought in the next two weeks?

There was definite mention of buying in the next two weeks.

Edit - I've posted on the club facebook page asking for clarification, but I'm guessing they may be busy with other stuff this morning so not expecting an instant response.

Looks like this offer has been extended to end of month as well, instead of the initial 2 week period (according to AG interview on website) so good on them for listening. One less excuse for folk not to buy.

From Andrew Glover

Yep, well done for extending the deadline, it makes sense.

I'm in one adult and two kids.

Maybe its a bit more simple than that, the Sl clubs have just voted for a reduction in clubs' from the start of the 2015 season. so everybody apart from the top half a dozen clubs' will be after spending as much as they can afford and perhaps a bit more in an effort to make sure they are not relegated at the end of next season, so it makes sense really to find out just exactly how strong the club will be financially for next season and want the money up front so that they have the money available to recruit early if the right players, become available and of course have the finances in place to do this.