If you do visit, be sure to browse detectors by (clicking on) the name brand. Here is the link to the bat detector section: Link
It will look like this:
Anabat Batbox Ciel Elekon Magenta Pettersson Wildlife Acoustics
Heterodyne Dual Function Frequency Division Multi Mode
Bat Detector/Recorders Digital Recorders
Sound Analysis Software
That way, you'll be able to read an original mini-review of each one.
Happy bat detecting!