"Cheap Insurance"? Hmmm...
The first thing I will note is that in all the years I've been shooting digital cameras with screens on them (about 15 years, so far), I've sustained damage to them exactly once. That's crazy, considering that I don't baby my gear, right?!! To me, my cameras and associated gear are tools to be used, not investments I baby so that I can retain some resale value. Maybe it says something about the durability of the gear, including the screens. I dunno.
The number of cameras/screens in that time is 7, so that's at least 7 protectors I'd have bought. Since protectors tend to get scratched and bubbled and marred fairly easily (from my limited experience with them on my cell phones over the years - I don't use them at all any more), I'll guess that I'd actually have bought and used twice that many, if I were someone that buys and uses them.
Looking up the Vello Screen Protectors recommended as "cheap insurance", I see that they go for about $25 each, plus S/H. So, I'd have spent between about $200-$400 over the years, so far, and would continue to do so. Remember, I've damaged a total of 1 screen in all that time.
Here's my way of dealing with it instead:
Vello Screen Protector: $25.
~~OR~~
Replacement Screen: $19. <--I do this.
My Real-Life Example:
I had a 5DMKII and a 7D each hanging off a
Black Rapid DR-1 Double Strap while out shooting somewhere in Alabama. When I went to remove them, I should have removed each from the harness, then removed the harness. Instead, I pulled the harness up over my head, and the two bodies clanked together, causing this shattered screen on the 5DMKII.
1. The shattered screen.
Steps to replace after ordering and receiving the new screen for $14.99 + $3.99 S/H = $18.98 Total:
2. Items/Tools Needed: Hair dryer to supply heat to melt the old glue, replacement screen, and a suction cup to pull on the old screen (turned out to be too big, so I used a suction cup on a child's toy, as seen in the next two photos):
3. Heating the screen, suction cup attached and ready to pull on.
4. A little tugging and it pulled right off.
5. Removed the remaining old glue strip.
6. Prepped the new screen by pulling off the protective pieces.
7. Exposed the sticky part on the new screen.
8. Place the new screen and press firmly all around the edge after making sure the surfaces facing each other are clean of all dust, etc.
9. One last look at the old screen next to the new one.
Bottom line: I personally don't spend additional money on screen protectors to cover the LCD's screen protector already installed by the manufacturer and easily replaced.