The Three of Cups can indicate that there is a strong possibility of a windfall. The card symbolizes the hope of a victory that is recognized after a period of difficulty. This means that your persistence and persistence in facing life's challenges will be rewarded with an unexpected payoff. You may even get help from someone who can provide you with what you need to achieve your goal.
The Moon can indicate that there are no obstacles in your path to success. The card can symbolize enlightenment through which you will be able to discover your true purpose and make decisions that will help you achieve it. This means that you will not face any kind of obstacle or suffering before reaching your goal. Furthermore, the Moon can also represent the creativity you have within you to find new solutions and improve your skills.
Based on the interpretation of the tarot cards, it seems that the chances of windfall are very high. You shouldn't encounter obstacles in achieving your goal, but you will have to put effort and be creative in finding the right solutions. So, the answer to the question is: Yes, there is great probability of a windfall.