Wow classic WOTLK gold Price guide?

Based on forum gold price of roughly $35AUD for 1000fg and 10k in game gold for around $21.31 ( price off G2G and price goes up and down slightly ) should that mean would be getting around around 15k gold in game gold for 1000fg give or take?

just got quoted 10k for 4.5k which is a bit of a rip off i think

just your thoughts?

If anyone is selling gold on Arugal horde please let me know