You don't file a lawsuit over $275. That can't be the "main part" of the lawsuit. If they wanted a refund there are federal and state agencies that can help.
Yes, if they held a press conference it would have been picked up by at least some in the media, put on the internet, and available to the world. They could have taken out an ad in the paper. Complain to the Better Business Bureau. Set up a website. Plenty of ways to alert the public.
This is nothing more than another example of people wanting something for nothing. Trying to win the lottery.
It's closer to $550. The refund was supposed to be for 200%. Possibly, they're just not as rich as you and can't afford to $500 in the trash.
Theoretically, yes, a press conference is "available to the world." My question "Was would this have come to your attention?" Realistically, it probably wouldn't have. The subject matter wouldn't have caught the attention of any major media players. I am a market director. My department sends out dozens of press releases daily. Unless we are reporting something truly compelling, most of it is really so much wasted paper/ busy work.
Most importantly, the company advertised their product as infallible and charged accordingly. This wasn't some cheap, OTC bullshit. If they'd been honest and reported the margin of error in their product, I'd feel they deserved a pass. They used a dishonest claim as their main selling point for a service that was relatively expensive. That is literally and legally fraud. They deserve to be sued. The parents motives aside, the company is completely in the wrong here.