Just wanted to let this community know that the Sony Touch cover with light (PRSA-CL6) works perfectly with the PRS-505.
I've used the Mighty Bright flex travel light and tried the PRSA-CL1 (lightwedge). This solution, in my opinion, provides good light with no glare on the 505. The light itself folds aways easily and the cover is very nice. It's faux leather, but is of very high quality. Much more rigid than the original cover.
I completely recommend it for a clean, integrated solution. This cover fits the 505 like a glove.