How much am I looking at to board a cat per month?

My dad and I have a cat, he has moved to a temporary house for 2 and a half months. He is renting in the basement, and there are no animals aloud. I have asked every one of my friends if they can watch the cat, including my mom who said she won't have another cat in our house, while my friends all hate cats or have dogs. So far I have asked my aunt and it has been two weeks that her family has been watching him, but I just got a text from my cousin asking me to come and pick him up because their cats and him aren't working out. I need to know if there is an alternative, or how much a kennel will cost for me to board him for the two and a half months, and I need to know how much it is per month on average