LG showed off the G4 at the end of April, we posted our review a couple weeks later, and we've spent the time since then waiting for the time when folks here in the US can pick the phone up from their network of choice. Availability and pre-orders have trickled out gradually, and now we've reached a point where the phone should be on sale across all five of the country's largest carriers.
US Cellular will let you get the G4 for $510, but that's only after you send out the mail-in rebate. So you better have a least $610 before you get ready to check out.
Verizon Wireless will let you walk out with a G4 for just $550. That's the cheapest of the carriers, but don't get too excited—the company is going to get much more than that extra $50 by the time you're doing paying your monthly bill.
There you have it. With the G4, you really have no shortage of options. You can buy one from whichever carrier you wish (unless you're on an MVNO), and you can snag more than a few perks while you're at it.