They do exist, but they are few and far between. Wheeler Automotive in Innerkip, Ontario is owned and operated by a former Tesla tech and is well known across the province, as well as Evolution Auto in the greater Toronto area. Véhicules Électriques Simon Andre in Quebec is also pretty big and has been around for a while. I think there are EV specific shops in the Montreal area as well.

10G is expensive if you use RJ45. It’s not as Benin you use SFP+ DACs or fibre modules.

I use a TP-Link TL-SX3008F. Works great, 100% silent, 8 ports is plenty for me. You might even be able to get a new one for just over $200USD.