Why would an item I placed on eBay to sell for A$110.00 was suddenly priced at A$66.00?

[daniel.mendelbaum]

Why would an item I placed on eBay to sell for A$110.00 was suddenly priced at A$66.00 without me changing the original asking price?

<Removed>

[gutterpunkz05]

It appears  the BIN price has been revised 9 times since 20/11/20