Impact Posters, hold the license for Transformers Posters and stickers.
The direct link to the Transformers posters they currently have in stock and available to order:
http://www.onestopposters.com.au/shopdispl...esize=15&page=1
Seven Transformers Movie posters currently on the site, each priced at $10.95 plus shipping:
- Bumblebee, Camero Concept version in both modes.
http://www.onestopposters.com.au/shopexd.asp?id=13098

- Movie Teaser Poster (Robot Eye over the Earth).
http://www.onestopposters.com.au/shopexd.asp?id=13099

- Group shot of eight Movie Characters, most in both modes.
http://www.onestopposters.com.au/shopexd.asp?id=13100

- Autobot symbol poster.
http://www.onestopposters.com.au/shopexd.asp?id=13101

- Decepticon symbol poster.
http://www.onestopposters.com.au/shopexd.asp?id=13102

- Autobot Movie group poster.
http://www.onestopposters.com.au/shopexd.asp?id=13103

- Main Movie poster with Optimus and Megatron facing off.
http://www.onestopposters.com.au/shopexd.asp?id=13116

Sticker Postcards - postcards that can be used as stickers.
These were not included in their email about their posters, but were found at Kmart.

Their two main websites for other Posters and stuff:
http://www.onestopposters.com.au
http://www.impactposters.com