This has nothing to do with 時間廊的錶. It is just a shop selling different brand names. Whether the watch is good or not, it all depends on the brand itself. You should buy your watch at 時間廊 when it is on sale, otherwise you can buy it cheaper at other shops. When 時間廊 offers 70% off, it is the bottom line (meaning the cheapest you can get).
I would suggetst "CASIO" for digital watch.