Well, my '99 Escort just went out the driveway so I can’t peek and tell you how easy it is to replace the alternator. But in any case there is NO reason to go to a dealership for this. Find a trustworthy independent mechanic and have him/her do it if you don’t DIY. Only question would be whether to use a rebuilt alternator or to spring for a new one (which will, sigh, come from a dealership).