Yes. eSIMAdvice currently lists 10 Ohayu Bulgaria plans.
The lowest displayed Ohayu Bulgaria plan is Bulgaria · 3 GB · 14 days · 5G, at $4.04.
Bulgaria · 50 GB · 90 days · 5G is the current best-value match by displayed price per GB: $0.75/GB ($37.34 in total).
Yes. Eligible displayed prices already include the active ESIMADVICE coupon where the provider rule applies.