Hi there, I see no body has answered you
My hubby is a plumber and he says, if you buy the bath first and then want it installed, you'll be paying about roughly $120 an hour for the plumber, if the pipes are already there, it should take no more than 2 hours, if they arent, then its an all day job..
Then you have to pay for parts, which again, you are better off buying the spindles before hand as local plumbers always add extra to the price. You can just get them from reece.. And the parts + pipes they need will also cost around $200.
So.. My answer would be $500 + Bath cost, they can be expensive too. Have a look at stores to check out the prices first though as they range from hundreds to thousands.

Very expensive, handy if you have a plumber as a hubby though!