I notice there are three separate folders in /Libary/Containers/ with the (visible) name of “GarageSale”. When I get info, one was created by gs7, one by gs8, and one by gs9. The finder (in the last few OS versions) will not show the “actual” folder name for these, as I recall, but only the app name itself substituted for the actual app ID.
And I think that every time you upgrade and keep the previous version, you will get another copy. I trimmed mine down to just the latest version - and as you said, get info is the only way to work out which is which.
David