Danquixote - I agree with Irvin ... make your own! You can do it! Heck, if I can so can you! The rub you are thinking of buying wwas originally made by some poor schlub just like you or me! Start simple and get as complicated as you like. As for me, I like to let the meat speak for itself. My basic rub is so simple ... 1/2 cup each kosher salt and coarse ground pepper, 1 tbsp ea granulated garlic and onion powder, 2 tbsp paprika, cayenne to taste (I use 1tbsp - I like some spice to my Q). You can substitute chipolte or other pepper as you like. For poultry, I add some sage, thyme, and maybe some rosemary and oregano in place of the garlic and onion and hot pepper. For ribs I add some brown sugar to the basic rub.
See, there's no magic here. Some people/rubs get really complicated and have an ingredient list that's so long you can cook a pork butt in the time it takes you to read it. Not for me....just simple stuff.
Have a great cook and make some wonderful memories with family and friends!