MS just announced a price increase for Microsoft 365 plans will come into effect in March 2022
https://www.microsoft.com/en-us/microsoft-365/blog/2021/08/19/new-pricing-for-microsoft-365/
New pricing
The pricing changes we are announcing today will go into effect in six months. On March 1, 2022, we will update our list pricing for the following commercial products:
Microsoft 365 Business Basic (from $5 to $6 per user),
Microsoft 365 Business Premium (from $20 to $22),
Office 365 E1 (from $8 to $10),
Office 365 E3 (from $20 to $23),
Office 365 E5 (from $35 to $38),
Microsoft 365 E3 (from $32 to $36).
These increases will apply globally with local market adjustments for certain regions. There are no changes to pricing for education and consumer products at this time.
NZ pricing hasn't been confirmed yet
Clint
edit: Added pricing