What exactly do a bunch of 1Ls have a claim for against BarBri? If they charge do much, don't buy from them!
No law student is forced to take BarBri. If you really think that BarBri is the only viable bar review course, then maybe you should take a stand by encouraging students to sign up for reviews with other companies, and just not give BarBri any of your money instead of filing suit against them.
I'm not a fan of BarBri's prices. I think they've been raising prices faster than inflation, but that doesn't mean that I think someone who hasn't even bought anything from them as a claim against them. If you'd already committed to them and paid them at least a deposit, then maybe. For now though, those 1L's are just kids shopping around for a bar review course and want the high quality at discount prices.
Can I go into a BMW lot and file suit if they won't sell me a BMW at Camry prices?