I have had my grizzle about this too (directly with Central Innovation).
I quite like the Aus WinDoor Builder (but it is released later and later each year to the point where you might be lucky to get 7 months benefit from it), and the Joinery add on is pretty useless and so too are most of the Aus Library parts.
The Tech support is excellent and I have used it on a few occasions and the response times are quite fast. it is worth noting that I use the Tech support less and less each year.
However, and I have tried explaining this to them, it is difficult to justify maintaining the Select Agreement when costs keep increasing.
In a nutshell, it's only the new version of ArchiCad that has actually kept me in the Select Agreement, and let's face it, many of the new versions haven't exactly been that brilliant.
I also see no point in buying Cadimage addons to perform tasks that ArchiCad should be doing in the first place...!!
This may well be my last year of the subscription too.