Yes. eSIMAdvice currently lists 25 Stellar eSIM Mauritania plans.
The lowest displayed Stellar eSIM Mauritania plan is Mauritania · 1 GB · 7 days · 4G · + Free VPN, at $10.96.
Mauritania · 10 GB · 1 day · 4G · + Free VPN is the current best-value match by displayed price per GB: $7.90/GB ($78.96 in total).
Yes. Eligible displayed prices already include the active ESIMTWEAKS coupon where the provider rule applies.