As another defunct car company had as it's slogan, "Ask the man who owns one."

I have not found my Saabs overly expensive to maintain over the last nearly 40 years and probably about a million miles put on them combined. However I do all of my own repairs and maintenance and have only owned pre-GM models. The Haldex X-Drive 4-wheel drive system on the later models is an expensive nightmare to keep going, the rest of the repair items listed don't sound like that a big deal. Parts availability is not bad since Saab Parts (now Orio) was a separate business not included in the bankruptcy, and enough pre-Spyker models were sold that aftermarket and used parts are available. (My most recent repair was a water pump that cost about $50 for a quality pump - cheaper ones were available for as little as $30.)

Saab is no longer in business because during the bankruptcy GM had to shed some its brands and sold Saab to an underfunded company (Spyker) that was counting on external funding that never arrived, due at least in part to GM blocking foreign investment. Part of the sale agreement with Spyker was to protect GM's IP in the last Saabs and the General did not want their tech falling into the hands of potential foreign competition. (In abbreviated form, that, as Paul Harvey used to say, is the rest of the story.)