MBP 2018 13 in pixel anomaly

I was wondering if anyone knew the typical costs for pixel anomalies? I took my device into Apple today, and I was told that it is failing the "red pattern" test. I just got this Macbook Pro less than a month ago. I have been very careful with it. I've never dropped it and never had liquid any where near it. I am hoping that they come back and tell me its a manufacture issue and will be fixed at no cost. But I was wondering if others have ran into this issue? To give a brief overview, my display has flickering/glitching, very thin horizontal lines when I am using it. There is a single thin horizontal yellow line that appears upon start up with the apple logo, but goes away right after. The other lines vary from white on a lighter screen, to sometimes pink and light blue on a darker screen. Any help or advice is appreciated.