Thanks for finding that. The WD IcePack is exactly the same as the VelociRaptor Heat sink that I use. Didn't know it was available separately, at a much higher price.
https://www.amazon.com/IcePack-Adap...TF8&qid=1545496829&sr=8-1&keywords=wd+icepack
Actually, that version of the IcePack on Amazon you linked to is the "dumb" non-electronic version and may not align the 2.5" properly to quick-connect/hot-swap/tool-less backplanes.
The version I'm going to get is the exact same that comes on your aforementioned VelociRaptors: WDSL00S. At the moment, they can only be found on eBay used starting at $13 shipped, presently. I haven't found a complete VelociRaptor module for less than $15 shipped so far.
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