It was a good two day run, but it looks like I won't be getting the Food average price to 150 ppu. Seems like most players care only about trying to sell things off fast, without caring to sell it off high.
Some highlights of the past two days:
Highest price was 149 ppu, lasted for just over an hour. Sold ~750k though.
Average price across all my trades was 144 ppu.
Managed to keep the price at 146 ppu for 9 hours (before I pushed it to 149 ppu) and sold 4.6 million Food