WEB PAGE redesigned and rebuild

i do need to redesigned and rebuild a new web page, and i would like to know how much will cost me.
we do have a full funcional one, so need to be copy and added more new thinks on it

all web page need to be done new, some will be similar to now and some will change,
we have a personal admin, a gallery admin and customers admin,

the web have lots of functionality , and i do need a professionals for the works,

gallery admin is to add formation and artworks,
customer admin to favorite and get email etc


so you will get 3/4 web similar to take the best of those to tryo to build the best art platform,

1/ i do need cost of the new web,

2/cost of transfer all artwork, gallery and customer to the new one ( depend of the price i will do it)


let me know if this is something than you can do
thanks