Never buy cheap tealights. They keep going out, they are overfilled with wax so they are self snuffing or something, or the wick is too feeble perhaps so it flops under the wax surface? Either way, only half the bag was useable, which makes them slightly worse VFM than the expensive ones that always work. Always the way, really.
@CrypticMirror Vimes' boots theory strikes again?