The cheapest NordVPN subscription currently is the 2-year standard NordVPN plan.
There are three different lengths of plan:
Monthly plan - starting at £10.39 per month
1-year plan - starting at £4.79 per month** (£47.88 for a year)
2-year plan - starting at £2.79 per month (£66.96 for a year)
There are 4 different levels of protection:
Standard - the cheapest most basic plan incl. malware, ad blocker
Plus - incl. above + platform manager, data breach scanner
Complete - incl. above + 1 TB storage, next gen encryption
Ultimate - incl. above + personal data removal tool