I'm not sure what all the trepidation is about. I purchased all of the Parsons releases so far and I didn't have to buy a bloated set to get any of them. All were released as stand alone versions, though it may have been a short time after the big box release.
Fortunately, Parsons is gentlemanly enough to release standalone versions. There are a number of releases that I did not buy because my level of interest was not enough to warrant the cost of a big box set...dare I mention Gene Clark, among others.