I ended up just buying an eSATA to SATA cable I had on my wishlist as something I'd kind of like to have, and a 2 way cable splitter since I remembered I needed one to get some $3 slow shipping credits. Amazon just shipped the cable today separately, so looks like I'll get both credits.
This will give me enough credits for an e-book I've been wanting for a while. (Thing absolutely never goes on sale.)