Yes. eSIMAdvice currently lists 11 AlpineSIM Mongolia plans.
The lowest displayed AlpineSIM Mongolia plan is Mongolia · 1 GB · 1 day · 4G, at $3.20.
Mongolia · 10 GB · 1 day · 4G is the current best-value match by displayed price per GB: $2.52/GB ($25.16 in total).
Yes. Eligible displayed prices already include the active AFFINCO coupon where the provider rule applies.