With electronic equipment you are much better off buying from a store rather than online.
Warranties can't be enforced buying online unless it's from JB, Kmart, the big chains etc.
Also like you say, you get to check the item before paying.
Also you need to make sure your computer can run the specs of the VR unit you are considering.
VR units work differently in terms of the hardware so you need to look at what suits you.
There is also some talk about people getting motion sickness if you are inclined to become seasick on boats.
