Vape shops are in the business of selling new stuff, a little at the time, so you will have to return. I can understand that, more returns, more sales and profits. I visit a few of the local shops and hang out a bit and I see it all the time. These guys all know the PT's coils are rebuildable, but I've never heard them mention it to anyone. They mainly just say the the poor soul needs to replace the coil and that they will be happy to sell them one for $3. Most all of them sell a 5 pack for like $12, but they never ask the customer if he would like 5 so he can just change them out and not have to return. I don't really see anything wrong with this, they are in business to make money, not to tell you how to save money. We, as consumers, are responsible for doing research and learning everything we can about our particular devices and how we can get the maximum performance out of them. Thank goodness for ECF!!!