This website is a scam, they sale a freeware. They use paypal as a payment method because they know that paypal doesn't cover software in their warranty. Any other website that claims to have the iphone 3g software-based unlock as today is a scam. Just check this forum or the dev team blog. they offer it for free.
nope theyre no scam... u have to read the site first
it says:
"Solution will JailBreak, Activate, provide Cydia Installer & Apple App Store on all 3G, V2.0, & older iPhones, & Unlock V2.0 iPhones not 3G"
meaning that they can activate and jailbreak 2g and 3g; but unlock only 2g