ebay is good place for pass vouchers.. got a films one and entertainment one in dec to cover 2 / 3 months over xmas.. irony being that didnt use them at all... but got for tenner each.
sports pass is just shy of 40 quid a month.... currenty doing a deal for half price for 2 months.
i tend to buy a day pass if im not at match and its on telly....