Yes. eSIMAdvice currently lists 28 ConnectMeGuru Mongolia plans.
The lowest displayed ConnectMeGuru Mongolia plan is Mongolia · 1 GB · 7 days · 4G, at $2.13.
Mongolia · 20 GB · 20 days · 4G is the current best-value match by displayed price per GB: $1.71/GB ($34.24 in total).
Yes. Eligible displayed prices already include the active ESIMTWEAKS10 coupon where the provider rule applies.