Personally I'm not a "reseller".
Although what I used to do is buy a domain from RegisterFly.com (reseller of eNom) and then I'd sell that domain for $25 a year, which is over double the normal price!
I got loads of profit from all the domains I did sell, but since I didn't sell too many I stopped accepting more domain sales.
Anyhow, doing what I did is very nice. You can offer a "managed" service where you change DNS, etc. etc. and your client doesn't have to worry at all. Because of course there are those total newbies out there who will absolutely love your service.
