I've heard good things from others so far, anything to be concerned about with them?
From their about page:
It began on Kits Beach in Vancouver, Canada. Three friends launched a mission to create a better way to help people see.
We've served over 1 million customers since 2018, proving that premium eyecare can be convenient, fast, and affordable.
KITS offers a rich selection of premium eyecare products: our own KITS brand as well as a large, curated portfolio of designer frames and contacts.
We prioritize our customers above all else. We are obsessed with the quality of our products and your KITS experience.
KITS is vertically integrated, lean and local. This enables us to make premium eyecare affordable, convenient, and fast.
KITS is proudly Canadian - owned and operated. Our modern optical lab in Vancouver is where we craft our lenses and tailor glasses to customer's prescription.
If I understand correctly, they do lenses locally, yes. But frames are from a monopoly.