Abstract: In at least one aspect, the invention comprises a computer-implemented method comprising: (a) electronically receiving a price request; (b) processing in a pipeline price information corresponding to said price request by applying a sequence of configurable rules to said price information; (c) temporarily withdrawing said price information from said pipeline while at least one of said configurable rules being applied is waiting for additional information; (d) inserting said price information into said pipeline after said additional information is received by said at least one of said configurable rules; (e) calculating a price based on said processed price information; and (f) electronically transmitting said price in response to said price request. Other aspects of the invention comprise related software and system implementations.