You gonna ask for donations now?
Depends on how long you're going to stay and how you're going to stay. Are you used to scuffed hotel rooms or do you need 5 star hotel rooms? Either way I think around 1200 USD is an okay place to start
do you stay at a hotel? do you eat at home/hotel or in restaurants? do you wanna visit museums etc? do you wanna use public transport/taxi/rent a car? how long are you staying? it really depends... could go from 200 euros to 600 euros a week depending on what you're doing etc
There's no way to answer your question. Plan out your trip beforehand, including petrol costs, or public transport if that's what you will use. Staying at a hotel etc. should be cheaper with three people, since you can just get one room with two beds and the other guy can sleep on the floor.
my buddy I'll travel the country this summer with my friend first visit to Turkey if you contact me I would like to welcome you.
depends what ur planning.
i know ppl that stayed in a hotel and used just 400€ for a weekend and then i know ppl that stay in a cheap hostel and spent 2000€ for a weekend. but i think with 50+€ daily u should be fine unless u wanna big party.