Yes. eSIMAdvice currently lists 25 AeroCell Samoa plans.
The lowest displayed AeroCell Samoa plan is Samoa · 500 MB · 1 day · 4G, at $2.79.
Regional · 8 countries · 10 GB · 1 day · 4G · Oceania is the current best-value match by displayed price per GB: $2.60/GB ($25.99 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.