Apple opened up the website for its iCloud Net-based online storage system to software developers on Monday—and revealed how much the service would cost.

At first, the pricing structure for iCloud—$20 for 10GB, $40 for 20GB, and $100 for 50GB—seems reasonable. However, compared to the roomy options available from online retail giant Amazon's Cloud Drive, Apple iCloud seems a little fluffy.

What's more, while iCloud offers the first 5GB of space for free, software giant Microsoft offers five times (25GB) the free space on its SkyDrive service. Still, the company has yet to announce any additional storage space options or plans.

And to be fair, Apple's iCloud is still under limited beta testing with software developers and won't be available to the public until later this fall. So additional cloud storage plans and prices could be in the works.

We're anxious to try Apple's iCloud service when it come out of its testing phase. But what do you think? How much would you spend yearly on storing information on Apple's—or any one else's—cloud?

Apple's iCloud Pricing Gets Revealed [Time]
iCloud pricing per year: $20 for 10GB, $40 for 20GB, $100 for 50GB [9to5 Mac Blog]