This is an excellent new service from Waves. So often one of their plug-ins is the right tool for the job but it is too expensive to buy just for that job. With this new service that never needs to be a limitation.
From their announcement…
For tracking, mixing, mastering, restoration, or live—whatever your sound field, you require the very best audio signal processing available. Now, you can rent the Waves you need to give your next project the extra edge. For a week or for a month, rent Waves plug-ins, and get the job done—professionally.
For more information go the new Waves Rental Store.
For example for an occasional surround job you could rent the 360 Surround Tools TDM bundle for $263 for 7 days or the Native version for $143.
Just remember the rental starts from the point you authorize your iLok and not from when you first start using it.