Canon HV30 !Help!

Guys,

I want to buy the new Canon HV30 Camcorder. I found it in Amazon.com (shipped from Eletronic Express) for $747.72, and at a store named 6th Avenue Eletronics for $738.96.

Does anyone know these stores? Can i Trust them?
Does anyone know other better stores where can i buy the Canon HV30?

Thanks a lot for the help!!

(Sorry for my bad english..I am not American, I am Brazilian :) )