The cost of a trip to Kerala, India will depend on a variety of factors such as the duration of your trip, the type of accommodation you choose, your mode of transportation, and the activities you want to do. On average, a 7-day trip for two people could cost around 50k to 2 Lakh including accommodation, transportation, food, and activities. However, this cost could vary significantly depending on your travel style and preferences. It's always a good idea to research and plan your trip in advance to get the best deals and make the most of your budget.