Elite and Jailey's are considered spas. Spas have a fixed place of business, a fairly consistent line up and typically a rotating schedule. Some are Asian focussed, e.g. Fort Road Massage, Oasis Spa and Asian Cloud 9, and are cheaper, ~$240/hr. Others are more white women focussed, but will have a more cosmopolitan line up, e.g. Diosa, TNT and The Gallery, and typically start around $320-360/hr. But some women start at $400+/hr. You can walk in off the street and ask to see a line-up or book an appointment.
Micros are smaller operations, work out of condos/apartments, don't accept walk-ins, and, in Edmonton, almost exclusively offer Asian women. They will only have 2-6 girls at a time, who work every day for a few weeks before leaving, either to another city or back home. Micro160 is the only non-Asian micro around (but is more like a collective), but they're not taking new clients right now.
Agencies are similar to micros, working in condos and by appointment only, but with a larger, more permanent roster with a rotating schedule, similar to spas. The only agency I know of in Edmonton is Lux Dollhouse, which is Calgary based and sends a few women up every week.