Unlocked iPhones (3G, 3G[s]) at MobileCityOnline

If you have to get a brand new iPhone 3G or 3GS unlocked and contract free, you can always go to another country or buy it from unknown source off of eBay. Then, there is the option of buying one directly from one of the most popular unlocked handset reseller in the U.S., Mobile City Online!

Right now, they've got iPhone 3G and 3GS in different color as well as capacity, prices are high but then again you are buying a brand new, unlocked iPhone from a trustworthy shop:

iPhone 3G 16GB - $829/$799 (Black/White)
iPhone 3GS 16GB - $999 (Black or White)
iPhone 3GS 32GB - $1299 (Black or White)

Again, these prices are stiff but you don't have to do any unlock yourself and these are contract free. Checkout my in person visit to Mobile City @NYC last year.

Buy.com Selling Unlocked iPhone 3G Legit Version?

I stumbled across a posting on one of my fav tech affiliate site, techbargains.com, and saw this few minutes ago. Upon clicking through buy.com's website, it looks like for $799 you can have a 16GB iPhone 3G unlocked or "never-locked". According to site description, you can continue to get full software updates via iTunes and won't have to worry about being locked. I am not sure what is the story with this iPhone 3G but leaning towards one of two theories:
1). Apple is trying to unload iPhone 3G inventories to make room for a possible new release in the Summer
2). Buy.com got a hold of some iPhone 3Gs unlocked from some countries which is required by law to have unlocked phones (i.e. Australia, Hong Kong, etc...)

Any ideas?