Good site for Reason Refills and for other platforms – C64, Pads, Apollo
Came across this site the other day and YES they had a very good collection of free refills (you need to sign up though, but it is free to register)
Just a tip on the way: I have been collecting refills for some 7-8 years by now and I have never purchased any commercial refills and still I today have a refill collection (and yes again only targeting the type of music I produce – electro, synth, EBM etc) closing in on 12Gigs – so make sure to surf around and download all the demo refills and free refills you can find and I assure you will never need to by a commercial one
Some of the stuff that I liked was;
the Whale refill
the C64 refill
and the Apollo refill
But make sure to support all the good musicians out there here is one good source for starters: