Yes they do.
Not if you read where I said to read. I pay $6.99 and they go as low as $6.49.
I've used both and Resellerclub is much nicer. Ipower is a Tucows reseller. I don't see anywhere that you can bulk order through them--got a link?
Having to login to a Tucows control panel for each domain is annoying, plus you don't get the same full control that you get through other registrars. Not having access to all domains through one panel is a major turn-off.
I used them for a few domains because of the free WHOIS privacy, but now that Resellerclub/Directi offers it, it's no longer a big deal.
Save up to $96 at Dreamhost with ALMOST97 promo code (I get $1).
Or save $97 with THEFULL97.