Unfortunately the part for the 2015 model is a little different than the other two. The 13 in. early 2015 model part number is '661-02360' while the part for the 13in 2013/2014 is '661-8153'.
What I would recommend is to either contact Apple or take it to an apple store/authorized apple service provider and check their prices. There is usually a mail in option for a flat rate fee of about $350 or so I believe that you can get the computer repaired for, or you can have them repair it or possible provide the part to you for around $350-$500. It's still pretty pricey, but it will come straight from apple and be cheaper than your $700 alternatives.