In January this year, the plates "MAORI", which had previously been owned by Kim Dotcom in 2011, went on sale for $49,000.
The reserve price for those plates had also stood at a whopping $99,000 before being slashed to $49,000 shortly before the auction closed.
Website numberplates.co.nz trades in personalised plates with DOGGY, FRODO, GOØFY and GOOGLE among those currently on sale.
The seller of the plate LOYAL, meanwhile, is asking $50,000 for their plate on the site.
A plate called "V8KIWI" reportedly went on sale in the past for $1 million.
Overseas, plates, such as "1", "007" and "F1" have fetched price tags ranging from hundreds of thousands of dollars into the millions.