Without spending an exorbiant amount? Around $15.
I tried nabbing this one 4 times so far and failed over the last 1-2 year. It was either out of stock or the poster was the wrong one. Damn it!
saw it for 25 bucks on ebay
http://cgi.ebay.com/Street-Fighter-Vinyl-Poster-1-1-2-Ftx-4-1-2-Huge_W0QQitemZ120236674973QQihZ002QQcategoryZ187QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ebayphotohosting
See if any of these retailers are near you, call or e-mail them asking if they have the poster prior to visiting their stores. Worth a try anyway.
http://www.streetfightercomics.com/GoForBroke/main_dealers.html
If Udon attends any conventions near you those are also good as they keep a few extras of this poster on hand. At the very least, the last 2 times they attended conventions in New York they had it.