From the Wizard101 website:

Become a New Wizard101 Member & Save 50%!

"Get full access to all Wizard101 worlds, join ranked PvP & Pet Derby matches, and much much more! Now you can start a new Membership with Wizard101 for just $4.95. Save 50% on your first month, and each subsequent month enjoy all Wizard101 has to offer for just $9.95. Upgrade Now "

See the Announcement here:

This special ends at 11:59pm Central US Time on Thursday, July 7th 2022!