more deals will always pop up I bought my RF82's for $500 and have seen them pop up around that price here and there. Just got to keep looking everyday and be quick I got a steal on my RF7 setup ended up coming out only down $150 for RF7, rc7, rsw15. Just come up with what you want and keep looking otherwise you could come up losing if you keep upgrading.
Where are you located there has been a pair of RF5's for $500 that have been on craigslist for a couple weeks now