Yes do not buy. I think it is terrible that they are still selling the software that they said they will no longer support and not have some sort of warning on the site.
Just an FYI, Panstoria who I think created SBC (or leased it out to them) has the software exactly like it called Artisan and by reading some of the updates they must be doing something or have their hand in the chapter 11 somewho. Most of us hope that CM will release the content (kits, etc) to Panstoria and then a lot of us are moving over there.
I've been doing a TON of research the last few days since CM just dropped the bomb that they will no longer support SBC or Memory Manager and do no printing after August 21.
Anyway I have been referred to many CM people to Persnickety Prints and they are just over half the price that CM would charge. I will be taking my business there. As far as the software, I'm going to wait and see what happens but I will use what I have for as long as I can because I have a lot of $$ invested in it and hope that Panstoria will support and get more content, etc.