Digital downloads are not much a collector's item.
When the set sells out, fans that were unaware of this CD release or were short of cash will be searching for these. I personally think it is a good investment. Even if See-BS decides to reissue the music in the future, it will likely not be the LA LA Land restoration. Hopefully, they made an agreement that the music would not be reissued for a certain time after the LA LA land release.