There are a few ways that an Enom reseller can sell registrations. One is using their API, which requires that money be on deposit to pay the fee's. This method also requires you to have your own payment processing and web site. Enom also offers a free very basic web site where Enom processes the payment for a fee. This method doesn't require funds to be on deposit.
I believe that the lowest domain reseller account will cost $8.95 per domain year for a .com, .net, and .org. This would be from an Enom reseller although you may be able to get a low price directly from Enom if you deposit a large enough sum.
Have you researched ResellerClub.com. Their prices are lower and a reseller site is free, although there is no payment processor.
Most of us can set you up with a free enom account, but you will need to place a deposit in it of $100. Retail prices may not all be the same, but will be similar.
The enom site does have quite a bit of info, but you need to stay focused, don't let there site confuse you.
In particular you may find the 'PDQ' set up suitable for you, depends what you want. have a look HERE
The mods will beat me up if I say much else, I'll just say I've run with enom for many years.
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