Selling STHFMZ4 Convertible Controller - $300

Looking to sell a STHFMZ4 SmartTop controller by mods4cars. This device lets you raise and lower the soft-top automatically from the full range of your remote without having to touch the button. Additionally you can raise or lower the top with a single press from inside the car and transition it while turning the car on or off. This is for 2016+ C-Class (A205), 2018+ E-Class (A238), 2016+ S-Class (A217) and can be installed in about 15-30 minutes with included wiring harness. I got a new car and can't use this anymore. Normally retails for $500.