Simple Loopers
Starting at around the $50 mark, single track, single foot switch and minimal functionality, features are added to enormous complexity. It never ends, and the more fully featured & robust Loop stations can easily exceed the $1000 mark.
Full Loop Stations
Full Loop Stations can have 3 or more recording tracks, multiple instrument or mic inputs, multiple outputs, built-in effects, routing options, Midi Connectivity, USB connectivity, built-in Drum machines, and more.
External Controllers
There's no end to ways that any Loop pedal or Loop Station can be expanded upon, regardless of its built-in feature set. Typically you can add External Foot Switches, Midi controllers and sometimes Bluetooth or wireless equipment.
Additional Hardware
A wide variety of additional gear may be utilized to complete your setup:USB Midi Hosts, Laptop/Ipad, power distribution systems, small mixers to connect everything to a PA or to interface to streaming equipment