Remember when you waited ages for [insert phone manufacturer here] to release that model with a MicroSD card slot and refused to even consider a device without one? This is where that decision pays off. Amazon Gold Box, the uber-retailer's one-day clearance portal, has put a handful of Transcend brand storage devices on discount. Most interesting to us is a pair of MicroSD cards on sale at $18.99 for the 32GB version (46% off) and $39.99 for the 64GB version (42% off).

But wait, there's more! In addition to the capacious capacities of these cards, they're also rated for Class 10 and Ultra High Speed Class 1, which means a minimum data write speed of 10MB per second. On these particular cards, Transcend claims that the read speed is up to 45MB/s. (User photos show the cards breaking 40MB/s read and 20MB/s write.) Most phones and tablets don't need that kind of speed for music or photos, but if you're storing high-definition video or using root methods for Apps2SD functionality, it could come in handy. Some latter Samsung products and the NVIDIA SHIELD support Apps2SD natively.

The cards come with a standard adapter sleeve, so they can double as storage for your laptop or digital camera in a pinch. Amazon is also selling the same capacities of standard SD cards for the same price, along with some pretty good deals on Compact Flash cards and external hard drives. As always with Gold Box deals, stock is limited and the deal will expire after one day. If you'd like to pick one of these cards up, do it sooner rather than later.

Amazon - Transcend 32GB MicroSDHC Class 10 Memory Card, .99

Amazon - Transcend 64GB MicroSDHC Class 10 Memory Card, .99