Hello dear Warriors!

I have one question that is bothering me for days and i would like to know if any of you have any suggestions.

I was developing websites, applications etc for last 5 years at a company, so i was paid there on a monthly basis.

For last year i was working also on freelance project and for simple websites it was easy to set a price, but now i had an offer to be a part of much bigger project and i do not know how much to charge.

The project is similar to this website with all the functionality: http://www.eatwith.com/ (payment gatewats, users registration, hosts registration(with monthly subscriptions), photo galleries, admin verification of new hosts, booking for each host and so on.

How much would you charge? I would make this app in laravel framework but really do not have any idea about price

Thank you in advance for help!