It's not really comparable to anything, other than other finils. They are their own beast.
Depends on what you are looking for to determine if it is worth the money.
Pros:
Very good for productivity- tasks and other repetitive work
Long lasting 6-10 hours
Modafinil has some slight benefits for mood enhancement at lower doses
Cons:
Can cause a hard crash
Next day lethargy
Agitation and aggression can be experienced when on it
Not good for socializing
Keep in mind that it is not a nootropic, simply a wakefulness supplement. It's great when you need to get things done as you want nothing more than to complete tasks and chores. It was created for people with narcolepsy.