We purchased and installed two ourselves.  I'm quite happy with the construction and materials for the price.  Good value.  We did end up anchoring it to the wall with some long screws into the wall studs and then chalked the top to the vanity once all of the faucet and drain items were installed.  Tip -- hang the sink over two horses to allow you to install all the faucet parts before attaching to vanity (see attached photos).  Don't forget dry fit, add faucet parts -- dry fit again... never hurts to check things twice.