First of all, I do not evaluate the stores but this specific product that is for festivals!
Stay away from photocells with the reflector-receiver that has a battery and the transmitter with power through the board. The battery runs out whenever it wants and the garage door only takes one command, that of opening. The reflector does not work with a dead battery, resulting in the door not closing!
The worst part is that it does not warn you! The first time it happened to me (at night...) I went crazy and ran the board for repairs, wasting a whole day. The board was fine and the technician told me to check if I have battery-powered photocells because that's the only thing left to check! I bought a battery (it is also a special 3.6v Lion) for 7€ and that was it! Last night it happened again after 2 years, but now I know its trick.
Stay awayyyyy...