I think lot provinces have limit on infant spaces - more do than don't but it newer in Ontario than other places.

I not charge based on age of child - each age have own challenges. Baby are less independent, toddler need toilet train and learning rules, preschool need help and practice with scissor, pencil control.

It more common here for centre to charge more for infant but that connected to ratios being smaller for younger age. Inhome daycare not so much.