I had a quick look on the NowTV offers website page and couldn't find any one month's sports pass deals at the moment 😡.
Perhaps consider the one month sports pass NowTV Gift card from places like Currys for £25.
You can get Now TV Gift Cards in certain shops and this would include a Months Sports Pass at £25. The following article from Now TV shows the main places to buy Passes:
You can get Gift Cards for Sports, Entertainment and Cinema and shops don't tend to stock all the various options, so you might need to search about for that £25 Sports one........ I think the Currys website currently lists them. I tend to use Supermarkets for my Now TV Gift Card needs, but you might not always be able to see on their websites what a store might stock, you might just have to go in and look. I think WH Smiths might also do the £25 Sport Pass???
You can get your monthly sports cheaper, you just need to track down that Gift Card!!!!!!!!
Keep an eye on nowtv.com/offers every now and then they have a £20 pass. Last year they had a month for just £9.99.
Normally the good offers coincide with major sporting events. Surprised there isn't one right now to get people to watch Now TV instead of the rugger. However would have been pointless this weekend with the football postponed.