See section 458A.240 for eligibility for treatment.
Upon the successful completion of the treatment program, the court will order the case set aside. Thereafter, a petition must be filed in the court that set aside the conviction. For the specific procedure, see Nev. Rev. Stat. § 179.255.
A person whose petition is denied can petition for a rehearing after two years after the denial, and no more than two rehearings can be requested. Nev. Rev. Stat. § 179.265.
There is no statutory language regarding fees.
The court orders sealed all records of the arrest and court proceedings which are in the custody of any agency of criminal justice or any public or private company, agency, official, or other custodian. Nev. Rev. Stat. § 179.255(7).
All proceedings are deemed never to have occurred and the person can answer accordingly to any inquiry, with exceptions listed in section 179.301. Nev. Rev. Stat. § 179.285.