Yes. eSIMAdvice currently lists 11 AlpineSIM Mauritania plans.
The lowest displayed AlpineSIM Mauritania plan is Mauritania · 1 GB · 7 days · 4G, at $10.30.
Mauritania · 10 GB · 1 day · 4G is the current best-value match by displayed price per GB: $6.12/GB ($61.15 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.