answer:Well to answer your question, in the most direct way possible, stainless steel cost more money to manufacture then basic plastic model. So yes, the more expensive shrimp deveiner is worth the money, seeing as how metal cost more then plastic. But if you want to go for what you can get out of these, the plastic one if you take good care of it can be passed down through your family for 1000’s of years. the stainless steel one.