I can comment on this as I have 2 ebay kits for each of our cars...and the Yaris and the Camry share the same lamp....just the bezel that surrounds it is different. Regardless of the name on on the box, they're all the same. The actual lamps bolt in just like the stock ones. They all come with the same prewired 4-pole harrness with some sort of switch that looks kinda stock.
As for "plug and play"? Eh, sort of...at best. On YairsWorld there are some DIY threads that show quasi-oem installs that are about as close to OEM as you can get. So I'm sure there is info, either here on TN or on a dedicated Camry forum, that would give similar installs. Regardless of how you do it, it'll probably require at least a bit of modding of the harrness. That may or may not be a big deal depending on your experience.
For me...I just removed all of the wiring related to the switch and ran the relay trigger wire to the parking lamp circuit. That way the fogs come on with the parking lamps and the low/high beams.
I'm happy with them...especially for price. Here are pix of both.