The market is so saturated today... I really don't think there are too many companies / persons that prepay $6950 for domain names. There are many choices, many new registrars and much cheaper offers... but enom is still the best and most reliable solution and provider.
Do you have to pay an upfront fee?
Is the fee redeamable against domains?
How many domains do you have to own to make it worth your while?
upfront-fee - No, not if you deal with Enom directly, Yes if you "buy" an account off someone *reputable* like Zoli or take your chances on something not so reputable as ebay
redeemable - to secure your initial pricing as an ETP (enom technology partner) you *deposit* money in advance of registrations - the more you depsoit , the lower your pricing
$6950 in = 1000 domaisn @ 6.95 for example
*note* not all extensions are 6.95 ....
how many - depends on what extensions - (there is life beyond the cnobi domains) and how many years you regsiter them for , how many transfers-in you do, and how many you expect to sell
in a *brief* set of calculations of interest on teh overdraft, vs domain reg fees, vs transactions I once estimated that it wasn't worth having a 6.95 a/c over a free 8.95 a/c until about 120 domains, then about the same cost until 775 domains and then better after 775, it was actually a bigger case of can we afford to tie up 7k with enom on*future* registration business, rather than using that cashflwo and just adding $500 as and when we needed to ...