Coles has a special on Virgin’s USB modem for $19 with 4GB of included data. That’s an Optus network device (Virgin’s a wholly owned subsidiary) so may not be the fastest in your area, but Virgin has one clear advantage over every single other wireless provider; instead of charging by the MB (or in parent company Optus’ case, by 10MB blocks), it charges data per KB.[Coles via OzBargain]