The blog source does state how Pakistan's Saab's were purchased;
the original purchase was funded by a 2006 credit arrangement of SEK 7.4 billion from the Swedish Export Credit and Export Credits Guarantee Board. Now they’ll have to add SEK 1+ billion to cover this, all to a country that isn’t viewed as a terrific credit risk.
Although the follow on support deal does look like it has Saudi connections, as you said .Although this has never been reported anywhere else. The blog also talks about Pakistan's support of militant Islam biting ten and so in, I'm a bit skeptical.
But anyway, going we are going off-tooic a separate thread will do this topic justice.