Shopify package has 5 accounts for 5 locations. The Advance plan has 15 accounts for 8 locations. Does Extra 3 location come with 10 extra people? than 5 location needs at least 12 account limit. I don't think this is a mistake. Looks like Shopify pushing us to buy $3600 package.
Do you have only 5 employees or does everybody sharing their login information with each other at your stores?
I am also facing the same issue.
We have around 10 people from Directors to Sales Reps while Shopify only gives 5 and 15 staffs for Shopify and Advance plans.
And the difference in price between the plans ($79 and $299) is almost 4X.
Shopify shall at least consider ala carte staff accounts (maybe $5 per additional staff)