Compulsory government charges only. Service fees and anything optional are excluded, which is what makes the figure comparable.
Yellow fever certificate
Arriving from Bangladesh, no yellow fever certificate is required: WHO does not list Bangladesh as a transmission risk. It can still be demanded if you have been in a risk country shortly before arriving.
Driving on a Bangladesh license
Papua New Guinea and Bangladesh are both party to the 1949 Geneva Convention, so an International Driving Permit issued in Bangladesh is one Papua New Guinea is bound to recognize.
Whether a permit is required alongside your national license is set by national road law, which we have not checked for this pair.
PNG Digital Arrival Card (PNGDAC) — ICSA says the PNG Digital Arrival Card is a mandatory pre-arrival requirement for all persons travelling to Papua New Guinea, including PNG citizens, permanent residents and all foreign nationals, and has told airlines that travellers must complete it before their boarding passes are issued. The card can be completed only in the 72 hours before arrival, and it is not a visa.
No official source states a rule on: travel insurance.
Papua New Guinean citizens travelling to Bangladesh: Visa on arrival. Up to 30 days.
Nationalities treated exactly the same
Papua New Guinea applies these rules — the same regime, the same allowance, the same charges — to Bangladeshi citizens and to holders of these passports: