I called the shop. As soon as i said the derailure broke they told me the warrenty dosnt cover that blahh blahh blahh how ever if you buy the parts from us we will install it for free it will be $45! dollars.. Blahh blahh blahh.. It will cost you $30 if you want us to install the one you bought.. This dosnt include the chain so you will have to buy that too.. Blahh blahh blahh.
Point is like i suspected. They wont fix it for under $75 bucks maybe.
So the derailer just arrived and so did the chain tool. I also have another bike that i have in my garadge that i used maybe 20 times. Would it be ok if i borrowed some links from that chain?