Yeah, that's worth significantly more than $50. It's in pretty bad shape for something sealed, but the seal looks legitimate to me.
Condition is a big deal for sealed stuff so I can't tell you what it's worth because honestly it's gonna be down to finding a buyer who will pay for a sealed game that is in poor condition.
That said, there is a player's choice copy sealed in comparably bad shape on ebay and the guy has it listed at $3,500. Hasn't sold, so I'd say at least it's not worth $3,500. Recent sold listings for what you have in much better condition are near and over $2,000. I'd guess in that condition, very vaguely, between $1,000 and 2,000.
That said, things have exploded in value since Covid, so a few years ago, a shop offering you $50 is still pretty low, but businesses pay low to sell high, it is a business... and the condition there does make it a tough sell. So $50 for that, 5 years ago, would've been a good deal for the business, but they might have only wound up making $50 on that sale in that condition.