itnt, not really a future value thing, rubber price has little to do with the profits, high or low prices mean you buy latex or cup cheaper, it's a value adding process.
What I don't have now is the cash to buy in volumes big enough to get over costs and into the profit area.

As long as the prices are stable you can work out true costs, say you buy liquid latex at 30 B a kilo, 10 B over dry cup price. Process it into RSS and sell at 50 B a kilo, 20 B profit minus costs.
Costs are legal workers, tax and 15% VAT, electricity etc, as things stand could do 40 M/T a month.
That's say $40,000 US in latex costs sitting in a shed waiting to be sold, plus the other costs and you need to be producing the next months sale while waiting to be paid last months money.
All starts to add up, figure I would need about $100,000 US up front and reserves of cash encase of problems.

2009 I had a shed full of rubber, one day $5 dollars a kilo, next $1, never recovered from the loss.
Money makes money, if you haven't got any you can't make any, that's just life.

I haven't really lost out, the land value has gone through the roof and this year the road out front is to be made into a 4 lane highway.
Rubber plantations will continue to produce a steady income, but a load of cash in hand could be put to better use than leaving an idle factory.

Up to Buddha. Jim