I don't know how this calculation was done, The monthly cost on Stacked Invest will be $350 per month for access to both the YFDAI ETH & BTC algorithm

Stake 3 YF-DAI receive a 80% discount — (Saving $3,360 per year)
Stake 2 YF-DAI receive a 60% discount — (Saving $2,520 per year)
Stake 1 YF-DAI receive a 40% discount — (Saving $1,680 per year)
Stake 0.5 YF-DAI receive a 20% discount — (Saving $840 per year)

Does the $350 monthly fee apply to all this staking features?