Yes. eSIMAdvice currently lists 10 Ohayu Finland plans.
The lowest displayed Ohayu Finland plan is Finland · 3 GB · 14 days · 5G, at $5.39.
Finland · 50 GB · 90 days · 5G is the current best-value match by displayed price per GB: $0.82/GB ($41.21 in total).
Yes. Eligible displayed prices already include the active ESIMADVICE coupon where the provider rule applies.