Honestly, I can't tell you how please I am; a service like this is great as cutting your own foam can be time consuming and error prone.
The foam arrived neatly packaged and came with some stickers.
The foam has helped immensely and really cuts the higher pitched frequencies quite a bit on my all aluminum board. It was hard using non-silent switches before due to the amount and type of noise(especially with linear switches), but after adding the foam, things sound noticeably better.
On top of which, $10(before shipping); what a steal!
Keep up the good work folks!