Great Idea! Priced Right, but a couple of design issues.
1) Goes through batteries pretty quick
2) Small Pistol primers do get a little stuck at the drop hole, You have to pop on the lid
3) Primers can 'flip' with lid closed
4) the serrated base doesn't do a very good job of flipping all primers. Should have used the Lyman round flip tray specs for your internal floor pattern design.
Finally, I wish the lid 'locked' down, a simple snug fit would help.