Potential Job with KK Kingston in Papua New Guinea

Just applied for a job as the "Technical Sales Representative: Industrial Tool & Machinery" with "KK Kingston" in Papua New Guinea: lea. What salary should I negotiate for with 5yrs experience? I'm having an interview mid week here in south Africa and they said: top class range of benefits and rewards are on offer, attractive salary package, free accommodation, company vehicle, annual airfares, medical cover, assistance with relocation and company insurance. Please advise.

How much is the average salary a month for a Technical Sales Representative with Qualifications?