Why would Efx ever do that ?
If they made the inexpensive plastic ones first, people would have bought them to satisfy their Vader need and then no one would shell out the big-bucks for a more expensive fiberglass version. It's like the server bringing you free bread before you order dinner and now you're less hungry so you don't order the steak and lobster and just get a burger instead.
If they sold the more expensive fiberglass one but announced they were also going to make an inexpensive plastic one later, lots of people who might have bought the more expensive fiberglass version would instead purchase the inexpensive plastic version.
This is sales and marketing 101. Sell the best, most expensive helmet you can and make the most money. Then, make a cheaper version to capture the people who didn't get the expensive version and, oh by the way, half the folks who did buy the expensive version are also going to buy the cheap version and you'll get their money twice.
Efx sold these the smart way.
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I'm dying that I can't get one of these. Too broke !