I think Shi Davidi took a deeper dig into it. He suggested Corey Seager as a good comp for Bichette. For Seagers 3-6 years + the deal he just signed, it came out to around 14 years, 351 million IIRC. So I'd expect something around there, if they go with that type of term.
For Vlad, I think it'll be more than Bichette. Maybe around 360-365 for similar term. Just my guess though.
Regardless, gonna take 700+ million to lock both up. I think Vlad re-signs and Bo goes to FA.