Hi what would be fair price renting z 800 or z1000 for month.

Im in pattaya.

Thx

you might find 20-25k / month for big bike if you negotiate

they are crazy expensive to rent, because their business is focused on short term holiday rentals with higher rates... it does not benefit them to rent long term for low rates... they can make more on 2 or 3 short rentals within the month.

even something small like a ninja 300 they ask 9-12k per month depending on the vendor

This site willl give you some idea of rates for a large variety of bikes - http://popcarrent.com/en/