I was pretty surprised at how easy PayPal has made it. I know that people prefer other services and the reasons they do, but at least PP has been moving forward in their ease of integration. Noticed it on Bandcamp recently as well. Just type amount, enter email and password then confirm and done (assuming you've got PP setup already).
I work with PayPal and to be honest my dislike doesn't come from the user experience but the developer side, the api, the tools, the interface, they are all broken, it is amazingly demotivating.
I worked with it years ago and had a similar experience. I guess I was try to say the recently I had a few pleasant, easy transactions. Upon further inspection, that might not be something to be too excited about.
Side note - is that really what people are paying for lattes now?
No, $3-$5 last time I got one.
I tend to go soy + an extra shot, dings me for $6-ish
If Lego Movie is any indication of the price of coffee it's around $37.