edging more and more towards starter replacement

[omodos]

Very very long story! but am looking to get the started changed soon,I cant DIY it alas, and things work in a funny way out here, , so have to take it to a garage, straighforward you may say? well whoever i mention my issue to on this god forsaken island i.e the starter needing replacing, they tell me to take it to a car electrician, rather than a mechanic....diy and BMW tis mentions the battery needs to be disconnected before work commences, and thats all electrically that needs to be done(plus remove the +ve lead off starter etc after), so not sure why everyone I talk to is suggeseting a car electrician.