They are expensive new, resale is almost zero. Same with explosive proof tools. Reasoning goes something like this, if you need and explosive proof light, you need an explosive proof light. Are you really going to put your self, your friends, employees, at risk buying off the grey market. Worst case scenario something goes wrong and you have an explosion. There will be an investigation, do you really want to be standing in front of an investigator saying yeh I bought some random lights from Joe Shmoo. That conversation is not going to go well.