For that price I would be having a go at it myself. From memory there is 2 hoses that run under the manifold. If its the one that goes round the back of the head....DONT have a go at it.Its a really tough one. But the other one that doesnt go around the head...Its tough as well but Do-able . The connection closest to the radiator isnt too bad, Its just the other side one that is the Biatch...
If you are going to pay a mechanic to replace these, my advice is to get ALL the hoses done in one hit. Funny thing about hoses is that as soon as one goes, the rest follow very soon after
Good luck !!