For those within range of a Frys Electronics store, USB to Mini B cables can be found for as low as $1.99... You just need to look around the stores for their discount baskets. They do sell more expensive ones for $4.99 up to as much as you could imagine, but their cheapo units have always worked for me.
Comments
I't a USB Mini-B connector.
These cables are silly expensive at stores and I don't mind dropping one in the US Mail to you. Send me your address.
Ken Gracey
And when it didn't show up I send the other one
Incidentally, Monoprice has those cables (and many others) at much more reasonable prices than your average brick and mortar store.
http://www.monoprice.com/Search/Index?keyword=usb+mini+b
(I'm not affiliated with them)
===Jac
Looks like an even cheaper one available as well: http://www.frys.com/product/4795859?site=sr:SEARCH:MAIN_RSLT_PG
dgately