Invaded has NERFED the January key. Voucher rewards are massively reduced and key rewards are somewhat reduced. Almost everything else is slightly increased to compensate.
What does this mean for you? You're expected to earn 33.52% of what you spend in vouchers, compared to 104.62% before. This of course means the key is no longer OP for earning vouchers. Don't buy it if that's what you're after. The voucher pack is appropriate for a $2 key; previously, it looked like they used a voucher pack intended for a $5 key.
In addition to that, based on the fair-market value of the items in the crate, which you may have slightly different opinions about than I do, I've determined that each dollar spent on January keys pays out 1.84m in ingame goods as well as 16 cents in IRL-money value (Invaded ranks). This determines what the IRL rate ought to be in a completely above-board way. I personally would see it as 2-2.5m/USD based on the data (I'm NOT OFFERING THIS in either direction).
Disclaimer: Soliciting IRL deals on Invaded is prohibited, even in in-game DMs (they will use SocialSpy and ban you). Always use an off-platform communication method, such as Discord DMs, when doing IRL deals on Invaded. Invaded allows and endorses IRL scamming, and will not help you if you get scammed while doing IRL deals. The only way you may be able to prevent being scammed is to sign a valid and enforceable contract and ensure that real money moves before ingame money. Your only remedy in the case of a breach of contract would be the IRL legal system.
Full analysis of the NERFED (current) January key:

Full analysis of the PREVIOUS January key, which was "broken" (voucher return >100%):

I'm going to keep doing these for every key that gets released. Hopefully, it helps you make more informed decisions when you choose to gamble your money on InvadedLands.
What does this mean for you? You're expected to earn 33.52% of what you spend in vouchers, compared to 104.62% before. This of course means the key is no longer OP for earning vouchers. Don't buy it if that's what you're after. The voucher pack is appropriate for a $2 key; previously, it looked like they used a voucher pack intended for a $5 key.
In addition to that, based on the fair-market value of the items in the crate, which you may have slightly different opinions about than I do, I've determined that each dollar spent on January keys pays out 1.84m in ingame goods as well as 16 cents in IRL-money value (Invaded ranks). This determines what the IRL rate ought to be in a completely above-board way. I personally would see it as 2-2.5m/USD based on the data (I'm NOT OFFERING THIS in either direction).
Disclaimer: Soliciting IRL deals on Invaded is prohibited, even in in-game DMs (they will use SocialSpy and ban you). Always use an off-platform communication method, such as Discord DMs, when doing IRL deals on Invaded. Invaded allows and endorses IRL scamming, and will not help you if you get scammed while doing IRL deals. The only way you may be able to prevent being scammed is to sign a valid and enforceable contract and ensure that real money moves before ingame money. Your only remedy in the case of a breach of contract would be the IRL legal system.
Full analysis of the NERFED (current) January key:

Full analysis of the PREVIOUS January key, which was "broken" (voucher return >100%):

I'm going to keep doing these for every key that gets released. Hopefully, it helps you make more informed decisions when you choose to gamble your money on InvadedLands.