Progressive springs cost about $100, if there's even better ones (Hyper Pro), I
bet they don't cost too much more... if you aren't interested in doing the
rebuild yourself, it should be possible to get a good job of it done for
two or three hundred dollars... don't let rocketray's $1500 put you off...
When I first got my tired eBay Valkyrie, it needed a lot. There's special
tools you need (some here use special techniques

) to do the rebuild,
so I just took my forks off and down to the dealer to let him "rebuild"
them. He did an awful job, they leaked a few months later, and charged
me several hundred dollars... I've aquired several of the special tools
since then, and I've refurbished several sets of Valkyrie forks, it is very
much not rocket science.
-Mike