Here is how I see it..
Snap pads are $26.25 ea delivered vs $33 for 12" foot (delivered?)
They increase your footprint to 420 sq. in. verses 452 sq. in. for 12 inch foot pad.
They don't rust.
They are green, made from recycled tires, in the USA.
Don't need to carry a milk cart full of 2x12's that take up space in storage and can get really dirty.
Don't need to do anything at a park that requires something under your pad.
Nice when when weather is bad for speed of setup and tear down.
They look nice and are substantial.
I just think they are a good option but different strokes for different folks