OnePlus today announced that it is permanently reducing the price of its flagship killer — the OnePlus One — to $249. The price cut comes a weekend after the company sold its handset at a $50 discount in a flash sale held every day last week. With the price cut, the 16GB Silk White OnePlus One will now retail for $249, while the 64GB variant will retail for $299. In addition to the price cut, OnePlus is also offering limited units of the 64GB OnePlus One with a “free” 1-year of Dropbox Pro subscription, which includes 1TB of cloud storage space, 256-bit AES and SSL encryption and more. The subscription is only available for customers residing in the United States, EU or Canada though. The Dropbox Pro subscription is not really free, since the variants bundled with the subscription will retail for $349. They will go on sale from June 10th in limited quantities.