Although most of us already have a Dell Streak in our homes, those who haven't bought theirs yet now have three "starting point" configurations to choose from when ordering the device from Dell.com. All of them can be further customized with extras like another microSD card, better headphones, and Dell accessories, but going with one of the Mobile Streak packages has discount benefits.
The discounts are shown after the items are added to your cart, so the prices you see in the screenshot above are the standard combined MSRPs. The reduced prices are $550.98 for the first Mobile Streak configuration and $632.47 for the second one. The "Dell Streak" config shown in the first column above is just the regular Streak ($549.99 w/o contract, $299.99 w/contract) so the price is accurate there.
What makes the Mobile Streak packages "mobile" is the inclusion of some accessories. The first comes with a 99-cent Plantronics Bluetooth headset (sound familiar?), while the second comes with the car and home docks for 25% less than their usual cost of $39.99 and $69.99, respectively. I think a configuration that includes a case would be nice, as that seems to be more of an essential accessory for most people than a Bluetooth headset or any of the docks.[Dell]