As far as I know, not much for Black Friday deals have been released yet. That being said, if you want a low end gaming laptop, look for something from a major hardware manufacturer (MSI, Asus, etc) that has a dedicated gfx card that's at least a 1050 (Nvidia) or 560 (AMD).
I'm not very familiar with Runescape, however looking at the recommended system specs, I honestly think you'd be fine with any modern integrated graphics from a non-shit-tier CPU. Look for a 6+ gen Intel i5 or AMD A8/10/12 with Radeon R7 graphics.
Otherwise if you aren't in a rush, AMD just released (like just last week, it will be a hot minute before they are in laptops stocked on the shelves) a new line of mobile APU's (cpu and gpu in 1, meant for laptops) based on a much more advanced and efficient architecture, could be something to keep you eye out for (I haven't seen reviews on them yet)