Make official price for tipping

[Vdaria]

Each port event (a person seeking a port getting one) has a unique circumstance, including time of day, plat level of porter, plat level of portee, distance porting, mana of the porter, opportunity costs of each person porting vs not porting, etc etc etc etc. If you want to pin down EVERY single variable and try to put a number on all of them, then sure, let's talk about the precise amount to tip. But until then, it seems fruitless to try to pin down a precise number.

If you are level 50, tip somewhere between 20 and 50. If you're leveling, tip what you can. This should leave no reasonable person unhappy. Anything more than 50p feels like a gift, and anything less than 20p seems a bit insulting.