^^^ agree with the jesus.
because reality is some software are too outrageous to buy to try. $500 is a lot of money but peanuts compared to say:
LightTools (optical package) $21,000 per year!.
Comsol (FEA/CFD) full package: $125-150,000 yes you read right.
Catia V5: $20-25,000
Cheaper alternatives to these do not exist, and the ones that are cheaper and try to emulate don't get the job done.
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Where are my aluminum pedals? 
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