Yes. eSIMAdvice currently lists 16 AlpineSIM Saint Lucia plans.
The lowest displayed AlpineSIM Saint Lucia plan is Regional · 25 countries · 500 MB · 1 day · 5G · Caribbean, at $3.35.
Regional · 25 countries · 10 GB · 30 days · 5G · Caribbean is the current best-value match by displayed price per GB: $4.49/GB ($44.87 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.