Our mango trees were loaded, 150-250 per tree (Bowen / Kensington Pride) and 50+ R2E2 - these were massive but due to excess rain tasted more like pawpaw. I couldn't give them away. We didn't even look at freighting them to market.
It started with the bumper crop in the NT. Mine were not ready, but they were $1.79 at the Fruit & Veg (much more in supermarkets) so I bought a few. Then as Qld supplies came in the prices didn't alter much. My 'warehouse' supermarket likes to show how they beat the Coles, Woolies & Aldi catalogue prices with a display at the entrance. Mangoes featured every week at about half their 'special' prices. They had them out for $0.79 ea (Bowen) for a while and are now stocking lesser known varieties Keitt, Pearl, Hood. The fruit looks good, even though they take 'seconds' that the big 3 won't touch.
We loaded up and went to our house out bush, but despite the drought the mangoes had out done themselves and the mail man was delivering free mangoes to his rural customers. We couldn't give them all away, so bought a lot back. The possums, birds and compost heap did well.
How did it happen? Mangoes won't tolerate rain during flowering; we had a mini 2 month drought that must have got every flower pollinated and fruiting. The NT had a very late start to the monsoon. Hence the oversupply in both states.
Our local roadside fruit & veg were buying dirt cheap mangoes and then advertising $5 a Tray! The "tray" was 2 or 3 sad mangoes on a foam tray, not 30 in a box (tray). They worked on the premise that if people stop, they will buy something. They also advertised $ per bucket of xxx - they had a standard plastic bucket on display, but had bagged up what they considered "a bucket full" and tried to palm off seconds as "organic". The van hasn't been there for about 2 weeks, so their reputation might have caught up with them. Or they went broke with unsaleable mangoes?