she can either come on the tourist visa and look for the job, or to find the job from her country, and then a sponsoring company shall bring her to Qatar at its own expense.
Try 6-months family visi visa. You might be able to convince the authorities to allow your wife to visit you. Minimum of QAR.10,000 applies only for the family RP sponsorship, not for the family visit visa. So try it.
And remember, buying visas is not only illegal, but also can put you and your wife in troubles. As you never know who will be your illegal sponsors, and how they will act once your wife is here under their sponsorship..