Yes. eSIMAdvice currently lists 21 AlpineSIM Guam plans.
The lowest displayed AlpineSIM Guam plan is Guam · 1 GB · 1 day · 4G, at $3.12.
Guam · 20 GB · 30 days · 4G is the current best-value match by displayed price per GB: $2.32/GB ($46.30 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.