There are big differences between these products. You are comparing apples to oranges I'm afraid. Yes, they are more expensive, but the job they are doing is a lot different in many cases.
If you just want to split the signal and don't care about fault isolation and protection from a catastrophic failure, then you're okay with just a plain splitter. If you are concerned about these things, then you really do want a professional grade Optical Isolated Splitter!
There are big differences between these products. You are comparing apples to oranges I'm afraid. Yes, they are more expensive, but the job they are doing is a lot different in many cases.
If you just want to split the signal and don't care about fault isolation and protection from a catastrophic failure, then you're okay with just a plain splitter. If you are concerned about these things, then you really do want a professional grade Optical Isolated Splitter!