I bought my 1st kit from Connecting Threads, read what came with it so I knew what I might need to add to it to finish it. I find they give more than enough as with their Sprinkles Kit. Came with 36 fat quarters and 5.5 yd background, .75 striped fabric for the binding. I was able to resize the kit and make 2 with plenty leftover from the fat quarters. I added some for the background and binding fabric just to be safe. But I was very surprised they gave so much of the 36 fat quarters. Even used some of the leftovers for another baby quilt and still have some leftover yet.
I'm sure not all companies are that generous but was greatly surprised from this one. Bought a kit from my local fabric store but haven't checked to see how generous they are. They're instructions were incorrect though so rewrote them.