Yes. eSIMAdvice currently lists 10 Ohayu Iceland plans.
The lowest displayed Ohayu Iceland plan is Iceland · 3 GB · 14 days · 5G, at $7.64.
Iceland · 50 GB · 90 days · 5G is the current best-value match by displayed price per GB: $1.14/GB ($57.14 in total).
Yes. Eligible displayed prices already include the active ESIMADVICE coupon where the provider rule applies.