So I have 64 add-ons with saved variables. 25 have a file size less than 10 kilobytes.
10 have a file size between 10 and 50 KB
5 are between 50 and 100, and another 5 between 100 and 200.
There's just two between 200 and 1000
For the next few, I'm ignoring the MM00-MM15 files.
2 are between 1000 and 2000, and then there's one at 7.1 MB.
If you include MM, the lowest is 3.8 MB, largest is 8.5, and the average is 6.2 MB, with a deviation of 1.4 MB.
I do have a spreadsheet with the names of the addons and sizes here:
https://docs.google.com/spreadsheets...it?usp=sharing
For one of my addons, the Set Crafter, I tried to see what some reasonable sizes would be.
With no use of it, it's about 6 KB (0 items). What I'd consider normal use (20 items) was about 50 KB Moderately heavy (80) was about 160. Very heavy use (200 items) gave me a size of 410.
The Writ Crafter uses 32 KB for me, and I don't think that the size will vary a lot.