price varies depending on your requirements, some can be pricy as they can do custom orders which is what we usually install as we are replacing the pump and lid onto an existing station and piping. since you are at the install stage, they might well have a package for you .
Although some are pricy, its not exactly something you should cheap out on either. You're best off to spend a little more money now rather than replace the pump again 5 years down the road.