Choosing an ecommerce SEO service starts with your business goals, not a...

https://wiki-canyon.win/index.php/What_Should_I_Ask_an_SEO_Agency_About_Mobile_Usability%3F

Choosing an ecommerce SEO service starts with your business goals, not a package. Ask how they handle faceted navigation, stockouts and product changes, what their reports measure, and whether any guarantees depend on work they control.