Modern Digital Birthday Card

I am a Realtor and would like a birthday card designed that I can send to clients. It should be warm, not childish, but a little fun and have the tagline 'Happy Birthday! We've checked the comps - you're still way above market value!'... (Budget: $30 - $250 CAD, Jobs: Art Consulting, Art Installation, Creative Design, Digital Art, Graphic Design, Illustration, Illustrator, Photoshop)