Looks like Vera is having a run on these modules again. It appears that these prices slightly beat the ones from the last thread.
Plug In Dimmable Lamp Module: Regular $49.95 Sale – $19.95
http://shop.getvera.co
Plug In Dimmable Lamp Module BUY 2, GET 1 FREE! Regular $107.85 Sale – $39.95
http://shop.getvera.co