So, with a small personal electric vehicle like this, a very large portion of the overall value will be in the battery, and the batteries don't last for life. They are wonderful investments, but just know that your looking at around 50% of the cost of the vehicle to replace the battery every 2-5 years, maybe a few more if your willing to deal with shit range as the battery degrades.
You can save a ton of money if you buy a spot welder and learn how to build the batteries yourself. The first battery costs about what you'd have paid retail, or a little more, after buying tools and supplies, but as you are able to repair and salvage cells and rebuild a whole new one you will save ass loads of money over your lifetime. That's the real "buy it for life" strategy here. Buy a kweld and learn how to weld 18650 cells together, and the scooter can absolutely last you a lifetime. But be prepared to spend at least 1500 dollars for "buy it for life" quality (I don't know the scooter market, but a $750 electric skateboard is low tier chinesium), and understand that you will need to learn to repair it if you want to keep it more than a few years.