Kydex - $16
Used this tape (Scotch-Mount Extreme Double Sided Mounting Tape) $23 but only used $10 worth of it. (This is on a size 11 skate)
About $30 all in / $15 per skate since I did both the inside and outside.
As far as comparing to ones you can buy, this is what I was trying to achieve... https://shotblockers.com/collections/frontpage/products/xt-pro-new?variant=39522491531329
...but with lower coverage on the boot since that's where I get drilled the most for whatever reason. (14 years of soccer growing up makes it instinct to try and kick save every shot you can, even when you know you shouldn't, HAHA)