Minimal profit per day estimation

Estimated profits per day and production-building are calculated "pessimistically": it asumed that all products have to bought at the current best available sell-order on the market (not the average). The same goes to the sell of the product ("best" current available buy-order). In addition there must be enough supply/demand on the market for a stable business (more than 10). The building degradation costs are the costs of building construction divided through 90 (asuming replacement every 90 days). For consumption is assumed that for all but pioneers no optional products are bought. For pioneers all but COF is bought.