Why do you consider them a ripoff? I'm thoroughly impressed with my tempered glass screen protector for my LG G3. I like it a lot more than the traditional film screen protectors. It does't even look like I have a screen protector, and it never get's all junked up and peely. Do you think they don't work well, or are you just referring to the price vs. traditional film screen protectors?
This is what i got for my G3, not Spigen, but still tempered glass, $13: http://www.amazon.com/gp/product/B00KQGDTN8/ref=wms_ohs_product?ie=UTF8&psc=1