Monoprice has a couple of Thunderbolt enclosures on sale right now between $60 and $100 off right now. You can grab the Thunder D3 Dual-bay Thunderbolt + USB 3.0 enclosure in silver for just $222 + $9 shipping. That’s nearly $50 off Amazon’s price and the lowest we’ve seen these go for since Black Friday. It supports two 2.5-inch SSD or HDD’s that can be from 20GB to 2TB in capacity (4TB total) and comes with both Thunderbolt and USB 3.0 ports for maximum flexibility. This package ships with a USB cable and a power cable, although it can be bus powered via Thunderbolt or USB.
Monoprice also has the ThunderDUO Dual Bay Thunderbolt enclosure in silver for $244 + $9 shipping. That’s the lowest price we can find. This enclosure comes with the same features as the previously mentioned model, minus the USB support. It also comes with a Thunderbolt cable instead of USB.