Postcards do not cost much. Printing a standard postcard costs around 20 to 50 cents per piece for a minimum order of 100 pieces. Standard postcards cost less to mail than letters and parcels.
Printing posters don’t have to break the bank, either. A variety of economical sizes are available; A2 (420mm x 594mm) and A1 (594mm x 841mm) posters can be excellent choices for initial, small runs.