Here is my honest take: $50 is steep for a 2010 game. But—the Switch port is excellent. It is arguably the best way to play RDR on a handheld (sorry, Steam Deck emulation stutters).
If you are looking for a “free” NSP update, ask yourself: red dead redemption switch nsp update eshop free
If you answered “No” to either, stick to the eShop. Wait for a sale (Rockstar titles hit 30-40% off several times a year). Here is my honest take: $50 is steep for a 2010 game
If you want to play Red Dead Redemption on your Switch without breaking the law or risking your console, here are real solutions: If you answered “No” to either, stick to the eShop
The physical cartridge (XCI format) acts like a "free" game in that you can resell it. Used prices on eBay or GameStop frequently drop to $35–$40. Play it, beat the 25-hour campaign, and sell it for $30. Net cost: ~$10.
If you are looking for the update for the NSP version, it is critical to know what updates Rockstar actually released. The game launched at Version 1.0.1 and later received Version 1.0.2.