Sorry, no experience with lamps sold by Amazon.

My wife collects (or use to when we lived in our stick house) oil lamps, we must have a jillion of them in storage. They all work, and we always had a bunch sitting around the house, all fueled up, wick trimmed, ready to go in the event of a power outage (which didn't happen often or for long since we are on the hospital power grid). Love the nice soft light, and I even like the odor of burning kerosene...