Guys I'm not sure if you're aware of this but Waves has jumped on the monthly payment band wagon.
Which I think is great for all music producers. Especially beginner / intermediates such as myself.
Check it out:
They are not advertising this (Looks like a BETA test) but I'm sure if you get in now, they can't really do much.
Best part is you end up actually owning these after like 2 years. Don't forget to get your receipts and keep it too.
C2 Compressor is on there