Yes. eSIMAdvice currently lists 16 AlpineSIM Turks and Caicos Islands plans.
The lowest displayed AlpineSIM Turks and Caicos Islands plan is Turks and Caicos Islands · 500 MB · 1 day · 4G, at $3.13.
Turks and Caicos Islands · 20 GB · 30 days · 4G is the current best-value match by displayed price per GB: $4.45/GB ($89.03 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.