Can someone please help me find a x-pole extension

Hi i am from New Zealand and own a 50mm crome x-pole. i have recently moved house's and my pole doesn't fit, i can't seem to find a 500mm 50mm screw thread extension anywhere, i don't really want to ship from overseas as the shipping is to expensive for me. is there anyone from New Zealand that has a 500mm 50mm extension i can buy off them?. If no one from New Zealand can help i might be able to afford one from Australia if you can offer a good price. I am really desperate as i miss pole dancing so much.