I'm absolutely not a lawyer, so may be mistaken, but the fees for I-129 / DS-160 are not explicitly mentioned anywhere. Instead the fee seems to be an entry fee, which is orthogonal to the actual visa (meaning ; you can have a visa but not be granted entry, or maybe be granted entry under a different program but then with no lawful work permit).
Personal Experience: H1B/Work PERM/Personal PERM/EADs/Naturalization
My wife picked her state job in large because of the retirement options and it being a 9-5 job.
Her degree is at a higher level, she's a civil engineer and with a professional license on top; as a tech person,I make about 50% more.
If she went to a private company, that actually paid women the same as men, we would make almost the same. Her choice was to bet on the state after having been exploited in the private sector and with no recourse.
Personal Experience: H1B/Work PERM/Personal PERM/EADs/Naturalization