The best we have are estimates that a truly unopened, authentic Alpha booster box could fetch a six-figure price tagpossibly $700,000 or more if one ever surfaced
If you needed the body, or just happen to have enough mana, then you could cast these somewhat over-costed creatures the normal way, and still benefit from that desirable ETB
Being able to (potentially) cheat out cards like Worldspine Wurm, Shriekwood Devourer and Thunderfoot Baloth is nice, but there are some solid reprints, too
Its even fringe playable in cEDH
TCGIndex doesn't give financial advice, but here's the data worth knowing: it sits around $0.40, up +2.8% over the last 30 days, with low volatility