It’s not hard to think of a boost that’s worth 30k sigils. The problem, to me, is that any boost good enough to be worth the price is likely to be so good that nobody can really afford to skip it.
The 100% token boost is like that, almost nobody goes without that (except maybe people at the very top with all dragons, or at the very bottom). But that one is 3k, not 30k.
I kinda fear that from this point on, everyone in a semi-serious league will be forced to reserve 30k sigils for this, meaning the average E2P goes from 1-2 dragons per season to 0-1 dragons per season.