Purchasing Commercial Grade River Rafts?

I would like to purchase two rafts to supplement my kayak fleet at the resort I work for. We are often shut-out of the river by the Park Service because they don't allow commercial operators to run kayaks when the river goes above 6.5 feet. They allow liveries to run rafts up to 9.0 feet. We saw a lot of high water the past year and couldn't operate with kayaks, however if we had rafts, we could have run our trips.

I used to raft a long time ago but never paid attention to the business end of rafting. I would like some feedback on brands, average costs of a new raft, and things to look for. I am looking for rafts that would hold 5-6 persons and be suitable for Class II to small Class III rapids. Rocks are minimal, so these rafts don't need to be bombproof, but I don't want something that is vinyl.

The NRS rafts I saw online are like $3000. I need two of them and that's over my budget. What are some less expensive brands that are good for commercial use?

Thanks in advance.