I didn't refer to any sunshade other than to state I didn't use one. I did mention the anti-glare film which is like the screen protector film they sell on Amazon. I couldn't see that much difference in the glare though.
As far as making a sun visor it's easy with 2" self stick velcro and a thin plastic sheet. I always make my own sun shields from when I was using the P2 and for the Note 4 using it on my P3P. Haven't made one for the Shield yet. You can get the black plastic sheet here:
http://smile.amazon.com/gp/product/B004QPDU5C?keywords=ABS Sheet - .060" Thick, Black, 12" x 24" Nominal&qid=1450173638&ref_=sr_1_1&sr=8-1
And the 2" Velcro here:
Amazon.com : VELCRO - Industrial Strength - 2" Wide Tape, 15' - Black : Mounting Tapes : Office Products
It may or may not be cheaper (you could make two out of that sheet) but certainly better. I cut the plastic with a Dremel tool and the Velcro hides the rough edges. I used the fuzzy side on the outside and the hook side on the inside to make it look better. If you want to fold it up make sure you attach the Velcro in the folded position or it will pull the Velcro loose when you try to fold it. The nice thing about making your own is you can make it a lot deeper than the store types which really helps a lot more in bright sunlight.
Edit: The Velcro I listed my be out of your price range but you could use any kind of thick tape. Even that type of packing tape with the nylon threads in it would work. The Velcro adheres well and makes it look kind of professional.