your site still does not accept my postal code 34219

Strange it still works for me...https://www.cargurus.com/Cars/inventorylisting/viewDetailsFilterViewInventoryListing.action?sourceContext=carGurusHomePage_false_0&formSourceTag=104&entitySelectingHelper.selectedEntity=&zip=34219

At the bottom of the page there is a tab "contact us" Try to contact them to see if they can help...

If you don't get it, then its time to move on to another site.