My Info display - like yours - is impossible to see in about 30% of normal daytime driving because of glare. Noticed that BMW has the display lower and recessed; with no glare problems. If someone would make a cowling (a hood or shade) that cuts off some of the problem I would buy in a second. Requirements: Nice material, easy to install, looks like or close to OEM, flared sides so passenger can still see the display.
Get it from Robin on ebay. eBay Motors: Toyota Prius Sun Visor Hood for your Display Screen (item 120276030243 end time Jul-03-08 06:31:41 PDT)
About 30 seconds with google got me this review with a link to an ebay store: MFD Display Hood Kurt Knappās Blog
Your link doesn't bring up any items on my browser (probably the combination of Linux and Firefox). Is the seller this person: lindbergh61
Yes, the ebay store is here. eBay Store - Prius Hoods: Hoods, Door Armrest Covers, Center Console Covers