$90?
Forget man. DMOZ listing cost $900-1000.
For $90 risk is not worth it.
--- or he will get you there but in 2-3 months your account will be banned...
$90 is a steal for a DMOZ link in some niches.
For my niche (credit cards), I would pay $1000 for one, and it would be worth every penny.
But, if you niche is like "Gary Indiana Elementary Schools" then it might not be worth it.
Depends on your niche.