I am in the process of completing the NRVIA level 2 inspector course right now, unfortunately I am not in Florida, and don't directly know anyone that is there. NRVIA certified inspectors are all independent inspectors, there is no fixed pricing schedule, instead each inspector sets his or her own rates. What the NRVIA does do is set certain standards for what must be evaluated on an RV, a process to meet these inspection standards, along with a set of ethical standards, for example NRVIA inspectors are barred from doing any repair work for pay on an RV they inspect for 1 year from the date of inspection. It is then up to the individual inspector to offer services that meet these standards. Of course the inspector offer services, and levels of inspection that go beyond the NRVIA base level standards.
Having now been through the NRVIA level 2 advanced inspector course, I would am very impressed with the material covered, it is a 5 day intense program done after passing the testing requirements for the level 1 inspector course, with 8 solid hours of class work each day, plus another 3-4 hours of homework each night, then another couple of days worth of work to be done at home within 2 weeks of finishing the class. The first 2 RV's I have been involved with inspecting during the course have reconfirmed to me the need for inspection even on new RV's. Having seen water leaks, split slide seals, screws over penetrating and separating roof trim, end cap separation, gaps in sealant, ... on a new (2016) low end travel trailer which now has a soft roof, and on a mid range 5th wheel just bought a few weeks ago.
Having said all of that, an NRVIA base level "life safety" inspection will typically take one person roughly 4 hours to perform on an average RV, and a typical full inspection may take 7-8 hours. (plus a few hours to write up the report) The NRVIA encourages the use of a helper to complete the inspection in a single day, as this can be 7-8 hours of constant work. The inspection is mostly about the house part of the RV, not about the chassis or power train, which should be inspected by a mechanic familiar with the specific brand of chassis, though the NRVIA inspection does include checking such things as tire pressures and DOT date codes, as well as basic inspection of suspension and running gear as well as the option of fluid analysis that can indicate signs of abnormal wear in the engine, transmission, etc.
What I can say about pricing is that a basic life safety inspection typically costs somewhere around $400, and a full inspection typically starts at about $800, and goes up depending on options like oil and fluid analysis, detail level of report, number of photos to be included with report, a base level report may have 40-50 photos included, where an more detailed report may include 100-200.
2002 Safari Trek 2830 on P32 Chassis with 8.1L