For what it's worth, I can tell you that you can find good quality replacements on ebay and online stores right now. On ebay, you can find a bunch of Reynolds Ouzo for integrated headsets, and the specs are identical or nearly identical to the Slice fork I have, so I'm assuming it's the same for most if not all Slice forks. You'll see new ones going from $120-150 auction and BIN. Also, if you look at Icyclesusa.com, they have a very nice Dedacciai fork, again with the same specs, for $100. I've looked at them both and decided on the Reynolds, strictly on the basis of what I happen to like for looks, but I believe both are excellent forks. My Reynolds weighs 370 w/o the expander plug. The Deda weighed the same, but with the plug, so it's probably an ounce lighter. Both had carbon steerers and alloy drop outs.
If you're looking higher-end (lighter, 300-350 grams), carbon dropouts, you can find something for around $200. The only reason I'm saying all this is that if you look for a replacement Slice fork, you might be shocked at the price. But there are good alternatives.