It's as sturdy as you need it to be, depending on how much you fill it, and easy to move, especially on a smooth surface. 
A bit more effort required on heavily grouted tile, but very doable 
It's a recent purchase so I can't attest to it 's 
longevity. I'm very pleased with this purchase and great for the money 
I only wish it weren't made of plastic in terms of the environment.