(a) In purchasing goods and services the comptroller may use, but is not limited to, the:
(1) contract purchase procedure;
(2) multiple award contract procedure, including under any schedules developed under Subchapter I;
(3) open market purchase procedure; or
(4) reverse auction procedure.
(b) Chapter 2156 provides additional information on purchase methods.

(c) Chapter 2157 provides additional information on purchase of automated information systems.
(d) In this subchapter, “reverse auction procedure” means:
(1) a real-time bidding process usually lasting less than one hour and taking place at a previously scheduled time and Internet location, in which multiple suppliers, anonymous to each other, submit bids to provide the designated goods or services; or
(2) a bidding process usually lasting less than two weeks and taking place during a previously scheduled period and at a previously scheduled Internet location, in which multiple suppliers, anonymous to each other, submit bids to provide the designated goods or services.