For the cheap price, I'd say pretty okay. I've subbed to others on ig with higher price but much less updates. A lot of the pictures she dish out in subbed category are usually sexier variations/pose of her normal ig posts. Some of it are not released in the wild too so I'd say that's pretty good for the price.
Unfortunately my sub ended at 1st may and I didn't have anything saved up. I'm not knowledgeable anyway on how to save sub-exclusive photos in IG.
There isn't a way apart from screenshotting your phone screen.
try using instagram mod app, there is a download button for every contents. except removing ads etc.. other functions are intact