I've bought a SanDisk Cruzer Blade 32 GB pendrive from amazon.in for ₹ 999. It's USB 2.0 and made up of plastic. I used it for offical purpose. Documents are to be kept in it.
Firstly, the maximum copying speed of the pendrive is 4 mbps which is quite slow. Secondly, it's made up of plastic and not water resistant. Thirdly, I have stored some important documents in it. Somehow the device got write-protection. And I've tried all possible ways to make it writable but I've failed. I have wasted my money in it as it can't be made writable. I've used many brands for pendrives but it's the worst. I should have bought some other brands as I have used it only for 2 months. I went to the service centre and they told me that it's under physical damage, nothing can be done.
So, I recommend not to buy SanDisk pendrive. Thank you