Yep the big suppliers of food are not as active as before and due to the past low food price alot of tax miners/virals have sprung up.
More demand than supply is resulting in a price spike which has crippled the tax virals but the tax miners are still making their profits, right up until it hits the mid 30`s per (think 37 is the break even point or the loss point can`t remember exactly).
There will be more food soon as more people see it as a profitable income style now (it`s as effective for terran to go agri and sell food at 4 per, than to be a comm based terran. But when food is over 4 per agri terran makes more money by a proportional amount). Agri collective, agri terran and agri maru will start to pop up soon/now and get established. Once they are established (read: have some ferts/clusters and a infra level over 40) food will start to drop again in price and the cycle will repeat after a few months of `stability`