Average cost to install a Pioneer FHX820BS radio into a 2005 Ford Escape LTD?

I'm getting a Pioneer FHX820BS radio for my daughter's 2005 Ford Escape LTD for a Christmas present. What's the average cost to install these? I've read online they made need to modify the sub dashboard to allow for the double din radio to fit and it'll need a double din mounting kit. So about how much will that all cost? I'm not going to even try to do it myself even if it saves time or money.

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