There is a 3 month minimum for advertising paid in advance. Pay for 12 month and receive 2 months for free. 

Plase contact  info@slovakchicago.org 

Most visible and best for advertising : Leaderboard (728 x 90 pixel): $100 per month

Square Button (125 x 125 pixel):  $50 per month

Skyscraper (120 x 600 pixel)  $100 per month