Email from arcadedepot.com
Hi Tim,
I was going over yesterday's shipments this morning and came across a
mistake we made that should work out nicely for you.  When your package 
was
being prepared I insisted that your order contained a piece of tempered
glass (not sure why that was stuck in my head).  At any rate, we 
shipped the
package and a piece of tempered glass out to you.  Enjoy it!
Scott 

  , but I replied and insisted on paying at least half.....
Tim