| Merchant | Domain | Country | Program Approval |
|---|---|---|---|
| costadelmar.com | Not Listed | Open | |
| costacrociere.it | Not Listed | Open | |
| costco.com | Not Listed | Open | |
| costco.com | Multiple | Open | |
| t-zone24.de | Not Listed | Open | |
| costomovil.es | Not Listed | Open | |
| costsavertour.com | Not Listed | Open | |
| costumalia.pt | Not Listed | Open | |
| maskmarket.com | Not Listed | Open | |
| costumediscounters.com | Multiple | Open |