So you can buy the prepaid codes to extend your live subscription up to 3 years out. You do this and then convert your live subscription to game pass for $1. This is only for new subscribers.

I won't be billed for gamepass until August of 2025 which saves me about $500.
*edit* I didn't factor in the extension live subscription. Actual saving is about $320, but savings nonetheless.

Here's the link:
https://www.theverge.com/23068983/xbox-game-pass-ultimate-pc-convert-xbox-live-gold-36-months-how-to



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