# pyblp.ProblemResults.compute_costs¶

ProblemResults.compute_costs(market_id=None)

Estimate marginal costs, $$c$$.

Marginal costs are computed with the $$\eta$$-markup equation in (7):

(1)$c = p - \eta.$
Parameters

market_id (object, optional) – ID of the market in which to compute marginal costs. By default, marginal costs are computed in all markets and stacked.

Returns

Marginal costs, $$c$$.

Return type

ndarray

Examples