Although I think it's still remarkable value for money, after annual increases my 30-day rolling contract (SIM only) had crept up from £5.00 to £6.07 per month. (1GB data, 250 minutes, 500 texts.)
I decided to have a look at upgrade options online, and to my surprise I could re-contract at £6.00 per month for 4GB data, unlimited minutes, and unlimited texts!
Obviously a tiny saving in cash terms, and I'm very unlikely to use much if any of the increased allowances, but in these days of high inflation affecting all goods and services, where else can you get something for
less than nothing?
Costs nothing to check...