Yes. eSIMAdvice currently lists 23 Stellar eSIM Papua New Guinea plans.
The lowest displayed Stellar eSIM Papua New Guinea plan is Papua New Guinea · 1 GB · 30 days · 5G · + Free VPN, at $2.06.
Papua New Guinea · 3 GB · 1 day · 5G · + Free VPN is the current best-value match by displayed price per GB: $2.05/GB ($6.15 in total).
Yes. Eligible displayed prices already include the active ESIMTWEAKS coupon where the provider rule applies.