Is it worthwhile to invest in collectibles?

Yes. Do not invest in just anything. You have to know the difference between a valuable investment and a bad one. One good resource to look to is Ebay. They have a page dedicated specifically to investing and collectibles. Ebay will give you a thorough guide on which collectibles are more profitable. Here is a hint. Most valuable collectibles will not give you a short-term return. When you invest, it has to be for the long-term.