We simulated an economy with 1000 buyers and initially 2, and later 5,
pricebots employing various mixtures of pricing strategies. In the
simulations depicted, buyer valuations are uniformly distributed in
the interval [0, 1], and each seller's production cost r = 0. The
mixture of buyer types is set at 
, 
, and 
; when S = 2, 
. The simulation is
asynchronous: at each time step, a buyer or seller is randomly
selected to either make a purchase or reset a price. The chance that
a given agent is selected to act is determined by its rate; the rate
at which a given buyer b attempts to purchase the good is
set to 0.000999, while the rate 
at which a given seller
reconsiders its price is 0.00005. Each simulation was iterated for
100 million time steps.