Does joomla virtuemart support reordering of items.If your customer shops some items and can he/she in a position to order it frequently following a custom period of time(for eg: 2 days).To ensure that once he/she gives a purchase the very first time ,is he going toOrshe'd receive items every 2 days.Can there be any solution with this?

Best way I understand to do this is to edit the VM 'Save to cart' function. The VM forums explain how you can save the trolley in database and call every time the consumer logs in. This can be a core hack so make sure you backup prior to trying.

Source: http://forum.virtuemart.internet/index.php?subject=14790.