Progressive RC is the iCharger dealer in the US and his prices are the same as AMain. ProgressiveRC offers the full line of iChargers not just a few selected ones, has powersupplies and all the adapters and balance boards as well. HC is a little cheaper on iChargers, but once S&H is factored in, you're better off with a US based purchase.
iCharger has announced a new charger, the 3010B for release in May - its a 1000watt charger that will be the most powerful charger on the market. It should drive prices down on the lineup to 'make room' for itself or if they decide to discontinue some models. There hasn't been any advertising on it yet, but there is a 450+page thread on iChargers on RCGroups where one of icharger designers talks with iCharger users where its been discussed.
Hyperion is also revamping its charger lineup - new SuperDuo3 and a 1420iNet3 chargers, their ac/dc charger is getting a power upgrade from 50watt to 90watts. If you are interested in a high end type charger and can wait to see what develops over the next 1-2months, there should be plenty of opportunities to get a great charger.