Sasol Oil (Pty) Limited v Nationwide Poles CC

Sasol Oil, a major subsidiary of the Sasol group, marketed liquid fuels and lubricants, including creosote (a wood preservative). In August 2002, Mr. Foot, who had acquired control of Nationwide Poles (a small pole producer in the Eastern Cape), discovered that Sasol was charging Nationwide higher prices for creosote than it charged to Nationwide's competitors, such as Woodline (a large pole manufacturer). Sasol operated a volume-based discount pricing system, where prices ranged from R2,417 per ton (for purchases up to 450 tons/annum) to R2,071 per ton (for purchases over 5,500 tons/annum). Prices were recalculated quarterly based on previous three-month purchasing volumes. Nationwide complained to the Competition Commission, which issued a notice of non-referral. Nationwide then referred the matter to the Competition Tribunal, alleging prohibited price discrimination under section 9 of the Competition Act 89 of 1998. The Tribunal found Sasol dominant in the creosote market (with over 45% market share), found the pricing constituted price discrimination likely to substantially lessen competition, and declared a prohibited practice had occurred.

• Whether Sasol was dominant in the relevant market for creosote
• The proper interpretation of section 9(1)(a) of the Competition Act - what standard of proof is required to establish that price discrimination is 'likely to have the effect of substantially preventing or lessening competition'
• Whether Sasol's volume-based discount pricing system constituted prohibited price discrimination under section 9 of the Competition Act
• The meaning of 'equivalent transactions' under section 9(1)(b)
• Whether the evidence supported a finding that Sasol's pricing was likely to substantially prevent or lessen competition
• The evidentiary burden required to establish anti-competitive effects

The appeal succeeded. The Competition Tribunal's determination was set aside and replaced with an order dismissing the complaint. No order as to costs was made.

Section 9(1)(a) of the Competition Act requires proof of a reasonable possibility that price discrimination by a dominant firm is likely to substantially prevent or lessen competition in the relevant market. This requires evidence-based predictive judgment, not speculation or mere competitive disadvantage to a particular competitor. The complainant must establish, on evidence, that there is a reasonable possibility of substantial anti-competitive effects in the relevant market. Competition law protects the competitive process, not individual competitors. A price differential that imposes additional costs on a small competitor (even 3.6-4%) does not, without more, establish a substantial prevention or lessening of competition where: (1) the disadvantaged firm continues to compete effectively; (2) there is no clear evidence of market exit caused by the pricing structure; (3) small firms generally remain viable competitors in the market; and (4) there is insufficient evidence about how market dynamics (including competitor responses) would be affected by changes to the pricing structure.

The Court made several non-binding observations: (1) It discussed extensively the US Robinson-Patman Act jurisprudence and the tension between majority and minority approaches in Morton Salt, noting Justice Jackson's warning about potentially obliterating the distinction between legitimate and illegitimate discounts; (2) It explored European competition law approaches, particularly the emphasis on protecting competitive market structure, openness, and access to markets on merit; (3) It quoted with approval remarks about competition policy in developing economies needing to play a dual role of empowering underprivileged economic agents while establishing rules of fair competition; (4) It noted that volume-based discounts are not categorically exempt from section 9, and if treated as blanket exceptions would render section 9(2)(a) a nullity; (5) It observed that had the case been properly investigated by the Competition Commission with comprehensive evidence about small competitors' operations and Suprachem's pricing and capacity, the outcome might have been different; (6) It expressed regret that the case was litigated without the benefit of the Competition Commission's investigative powers, resulting in limited industry-wide evidence; (7) On consumer welfare concerns, the Court noted it lacked sufficient information to determine whether prohibiting the pricing structure would increase average prices or lead to collusion, or whether pricing would remain similar.

This judgment established the authoritative interpretation of section 9(1)(a) of the Competition Act 89 of 1998 in South African competition law. It clarified that prohibited price discrimination requires proof of a 'reasonable possibility' that the conduct is likely to substantially prevent or lessen competition, not merely 'competitive relevance' or disadvantage to a particular competitor. The case distinguished between protecting competition (the purpose of competition law) and protecting competitors (which is not). It established evidentiary standards for price discrimination cases, requiring concrete evidence of likely anti-competitive effects rather than speculation. The judgment also integrated comparative law from the US (Robinson-Patman Act) and EU (Article 82 EC Treaty) while adapting these principles to South Africa's constitutional and developmental context, including recognition of the Act's purpose to promote small and medium enterprises. The case highlighted the importance of comprehensive evidence, particularly regarding market dynamics, competitor behavior, and the investigative role of the Competition Commission in building a proper evidentiary record for complex competition matters.