When I broke my screen, the cheapest screen/digitizer I could find was $120, most were north of $150, so I'm skeptical of your $24 screen. Are you sure you're looking at the right thing?
I sold my broken N6 on eBay for $70, and bought a brand new phone for $199. This was a year ago.
Also, there is currently an eBay auction for an N6 that had a screen repair job done, and the new screen never adhered. It's coming apart, so read into that what you will.. my takeway is that maybe this is not an easy phone to repair. I do know that you aren't going to find a lot of detailed screen replacement guides online like you would for an iPhone 6 or Galaxy S7.