I have bought a few items from Luna Park over the years. They are legit, you will get what you ordered. They are an expensive option compared to many alternatives. Some of my items came unprotected in soft shipping bags (damaged box, contents were fine), other items were bubble wrapped and in multiple cardboard boxes (great packaging). The one thing that I have found is that shipping takes a while. If you have patience and you make sure to email their Customer Service with expectations, then it works out. It is not the best option, but if you want something that is hard to find then Luna Park may be your only option. Good luck.
MB