Cheapest Registrars for biz & us TLD

[Registery.net]

What're the cheapest Registrars of the moment where registering biz and us domains ? We've few dozens for now but we're planning to register/acquire many more in the near future so, if getting a good price would mean prepaying for 100/200 credits in advance, it would be fine.

Not sure what's the cheapest possible fee on shc tlds but we're looking for something below $6/year minimum, if possible, thanks.

 

[entirenic]

You can check www.planetdomania.com

 

[carlton]

Check ipower

 

[Registery.net]

ipower no thanks, we'd not be happy to fax them our credit card and id copy

I see no real deal at planetdomania ... "biz, .us $8.99 "
Or are they offering bulk discounts and special deals ?

 

[Jimp]

1and1.com has $5.99 .us and $8.99 .biz, which is the cheapest I have seen.

 

[Registery.net]

$5.99 for US might be good for now, thanks.
About biz, I can pay mush less at Enom