There are a lot of more expensive tremolo pedals out there, but this is in my opinion best bang for the buck, especially if you just want to try out a tremolo pedal and don't really know what to buy.
Tremolo pedals on general have a bad reputation of being noisy and/or eating up your signal. This one doesn't really have any volume drop, but it is noisy a bit, especially if you use a big valve guitar head (you can hear how your signal is faintly pulsating even if the pedal is not ON). Make sure you use a dedicated PSU for this pedal, or a good quality power supply with isolated outputs, and you will minimize the pulsating of your signal. That was my experience with the pedal, at least.
If this pedal had tap tempo, I would have given it more stars, but then it wouldn't be relatively cheap as it is.
Anyway, because it's not any kind of boutique pedal, you can probably try it out in your local guitar shop, so if you're interested in getting into tremolo pedals, I would definitely recommend trying out this one.