One thing you can do is click on the link back to the bundle, then you can scroll all the way to the bottom to scoop the whole thing into one CSV. Sorry that you had to go to through the mess of downloading a bunch of files and then having to figure out how to merge them together.
I'll see if I can come up with a way to make it work with the paginated results, though. Tampermonkey allows you to use local storage to save a table of info. I may be able to use that to create a persistent collection of data and dump it when you export or leave the collection page?