That is a pretty good price for what you got, I can't fault you for getting yourself a great deal. Sometimes you have to treat yourself, and I can totally understand how a broken screen would be enough to turn you way, even if it's cheaper. I would've definitely let mine go for less than that, maybe even half of that if we're being honest; sometimes you just have to go with the best value and that's probably where you ended up.
If you're planning to use the graphics card for mining, I would definitely suggest trying to acquire a couple more cards or rigs to up your profit to significant enough numbers that it feels worth the effort/energy being put towards it. I might be completely off base though and for all I know you needed a laptop for your new interest of music producing, video editing or playing Steam games.
I appreciate you keeping us up to date so we don't continue to check the thread hopelessly. If you do plan on purchasing more rigs/cards just let me know, because my laptop/card probably won't be going anywhere unless I receive a decent offer on it. It sounds like you got a ridiculously low price on a very high-end newer model laptop, so I just want to throw out my basic disclaimers to you; if you're purchasing from a private party, like another user then definitely get an escrow involved in the transaction as to avoid many headaches that could come your way. If you've purchased this from a corporation I would snag the insurance, because things always tend to go wrong with the higher end laptops. If you purchased the laptop from an off-brand website, double-check you are actually getting what you paid for, because I've heard of some sites changing parts or mislabeling models just to make an extra buck. Good luck with your new laptop, hope it arrives to you safely and without malfunctions.