Some of the most expensive protectors do nothing. And do not claim protection. Take a $4 power strip. Add some ten part protector parts. Sell it for $40 to only protect one appliance.
Monster has a long history of identifying a scam. Then selling equivalent products for even $150. A similar product sells in supermarkets for $7.
How does a protector without earthing make hundreds of thousands of joules disappear? It doesn't. It doesn't even claim protection. With obscene profits, it makes subjective protection claims. However, if anyone knows better, then manufacturer specs that define that protection can be provided.
Either hundreds of thousands of joules dissipate harmlessly outside a building (because an effective protector connects short to earth). Or a surge goes hunting for earth destructively via appliances. The only solution used in any facility that can never have damage is a low impedance (ie less than 10 foot) connection to earth. From every incoming wire to earth via a conductor or a protector. Money is never wasted on protectors that do not have that dedicated wire that connect to earth.
For over 100 years, protection from even direct lightning strikes has always been about where energy dissipates. For over 100 years, protection has always been about the earthing. Higher price often indicates inferior protection. And does not even claim protection in manufacturer specs. The word scam applies. An effective 'whole house' protector from more responsible companies costs about $1 per appliance so that even direct lightning strikes do not damage the protector. Protection is always about a connection to earth.