it is often cheaper to buy a spare of something and throw it in a cupboard rather than have a support contract.
I have a bunch of Aruba switches and this is what we do, because it's a lot cheaper.
If you are only buying a single spare that is the case. Support contracts make sense when you would want several dozen spares.
If you are only buying a single spare that is the case. Support contracts make sense when you would want several dozen spares.