You can purchase domain name directly from hostmonster.com. Hostmonster plan allow unlimited domains, meaning that you can add new domains as many as you need. use the cpanel > addon domain, to add new domain.
You also can purchase domain name from other registra like: godaddy, enom, registerfly, etc. And after purchase, you can change the Name Server to Hostmonster server, thus the new domain is point to hostmonster hosting. This is not ‘domain transfer’, but is changing the NS and get the site hosted in hostmonster only. The domain still accessible from original registra, for example domain control panel of godaddy.
Go to hostmonster.com
