Cheap footies?

Heading overseas on a teaching exchange next year and want to take some footies with me for Year 8 PE lessons. A colleague who did a similar exchange 10 years ago told me that clubs / leagues bent over backwards to supply him with gear to promote the game but I've so far had no luck with AFL, SANFL, Crows, Puffs, Sturt, Norwood... in fact out of that lot only Sturt have replied so far just to say they were out of promo balls. AFL Canada also replied and may actually be useful down the track.
So if it looks like I have to buy some footies (say, 12-15) I'm just wondering if anyone can recommend a local supplier of cheap balls (cheap but not too nasty - I'm thinking the Rebel Sports of this world might be a bit too much)? Buffalo sports have a leather size 3 ball on sale at around $10 which looks the best I've seen so far.
http://www.buffalosports.com.au/Footbal ... ducts.html
Do clubs ever sell / get rid of old balls?
So if it looks like I have to buy some footies (say, 12-15) I'm just wondering if anyone can recommend a local supplier of cheap balls (cheap but not too nasty - I'm thinking the Rebel Sports of this world might be a bit too much)? Buffalo sports have a leather size 3 ball on sale at around $10 which looks the best I've seen so far.
http://www.buffalosports.com.au/Footbal ... ducts.html
Do clubs ever sell / get rid of old balls?