A deal on Apple's latest and greatest iPhones is hard to come by. You can now purchase the unlocked 16GB iPhone 6s for $619 and the 64GB for $719.

While Apple's iPhone 6s and iPhone 6s Plus share the same design as their predecessors, it's a whole different ball game when it comes to what's going on inside. The most-touted feature is what Apple calls 3D Touch, which the company describes as the "next generation of multi-touch."

3D Touch on the iPhone 6s and iPhone 6s Plus provide a new way of interacting with the devices through touch. It senses how deeply you press the display and allows you to do things like quickly preview an email without actually opening a message, and perform quick actions on the Home screen by simply pressing an icon, which presents shortcuts to different functions of an app without having to first open the app.

Apple has also significantly upgraded the camera and its functions on the iPhone 6s and iPhone 6s Plus. The 12-megapixel iSight camera captures sharper and more detailed images and it's also able to record 4K video for the first time. Live Photos is a new feature exclusive to the new iPhones, which captures the moments before and after you take a picture, bringing the images to life. Selfie fans will appreciate the new 5-megapixel FaceTime HD camera.

Deals on the unlocked iPhone 6s and 6s Plus have been far and few between but a new limited time deal can score you a 16GB unlocked iPhone 6s for $619 compared to Apple's $649 price tag and the 64GB variant can be purchased for $719 compared to Apple's price of $749.

If you're interested in purchasing either an unlocked 16GB iPhone 6s for $619 or a 64GB iPhone 6s for $719, head over to eBay.