How much is a case of caulking and 5 gallons of exterior paint.

painting a cat condo, huh?

Too vague of a question - different brands all have different pricing. A case of caulking can easily range from $20 on the low end to $75 on the high end (pack of 12 per case). Most exterior paints at that quantity would run between $100 - $150, but you find lower grade paints for cheaper or higher grade for more.

I suggest you call the store