Can’t think of any new online vendors. Although my main route to music is digital my limited CD buying habits have changed over the years.
I used to buy everything via SAE regardless of the label or whether it was US/Europe released. Convenience of a bulk purchase and knowing I could rely on them were my main drivers for using them. And back then shipping costs were ok.
Now I shop around, looking for the best (cheapest) shipping costs. I mostly buy from Europe stores, even own labels. Quartet, Chris’ Soundtrack(?) are two examples.