The lesson I learned was to not buy generic brand stuff from Amazon. The one I have is dreadful. The temperature dial is meaningless, the grip gets hot with the iron, and the tips that come with it* are absolutely awful. Even at low soldering temperatures they can’t take the heat, and at this point all of them have their cracked, chipped, or have otherwise become completely blunt.
But hey I got a nice generic tool bag full of wires that don’t conduct, insulation tape that doesn’t insulate, tiny screwdrivers, blunt snips, and “lead-free” solder that absolutely has lead in it.
* and it seems to be a fitting that nothing else will fit apart from the rubbish tips that come with a thousand other almost-identical generic soldering irons you can get from Amazon.