Hopefully they're incentivized to pour a huge budget into these given the "competition" of the movies (and GoT) and they make it worth the Prime subscription. (Personally Prime has so much value add these days for me I can't imagine not being subscribed anyway.)

When practical, I prefer to buy from specialized retailers (or manufacturers) for stuff I care about, so Amazon is a last resort for me.

The convenience, though, means I buy a lot of stuff I don't care about (or otherwise can't readily find) from them.