Well I've been very active on RS lately and made 20m or so botting. I've been looking to merch it all for a little gain and did the research. Papaya fruit are about to rebound from a clan merch. Meaning this is an item you can make a lot of money off of. Invest or not it's your choice, enjoy.
This is the chart, as you can see it has bottomed out and now is the time to invest. Enjoy the profits
I recommend selling at around 1400-1500 gp. That is a max, if you see them dropping do not be afraid to sell off. If we have enough people though can raise the price up to 2000 gp though. In order to do that we would need to buy out the market, it would be hard but it's possible.