Lucky Dip? LOL!

What is the Lucky Dip? When I click on the hammer it shoots me to a purchase window! Is it a pay or am I doing something wrong! I'm to the point I'm not enjoying the game it has gotten to where they are so hard to win and its now all about the purchasing!! I'm about done. The level I'm on is IMPOSSIBLE to do without boosters or extra moves no matter how skilled you are. I'm not paying so if I don't get through this one soon, I'm out.