I am looking for this on the printrbot website as an entire assembly and I can’t find it??
https://www.amazon.com/Printrbot-Ubis-13-Hot-End/dp/B015E7UCXS/ref=sr_1_2?ie=UTF8&qid=1487650685&sr=8-2&keywords=ubis+13s
https://printrbot.com/shop/ubis-13-s-hot-end/
You need to get the cooling fan as well and print an adapter.
https://printrbot.com/shop/fan/
I’d just go for an E3D v6. It’s much easier to print with.
I think you are right. Their website sucks on trying to order anything. Pisses me off!
Don’t forget the fan jumper board.