The spread between merchants A and B.

Table 6: The spread between merchants A and B.

Scenarios	*Position of $d^{}$**	The spread of optimal prices
Intense (SC1)	N	$Δ p^{S C 1 ~ N *} = 2 Δ T / 3$
Moderate (SC2)	A	$Δ p^{S C 2 ~ A *} = [(4 L θ + λ) Δ T - L^{2} θ λ + 2 a L θ λ] / (6 L θ + λ)$
	N	$Δ p^{S C 2 ~ N *} = 2 Δ T / 3$
	B	$Δ p^{S C 2 ~ B *} = [(4 L θ + λ) Δ T + L^{2} θ λ - 2 a L θ λ] / (6 L θ + λ)$
Weak (SC3)	A	$Δ p^{S C 2 ~ B *} = [(4 L θ + λ) Δ T + L^{2} θ λ - 2 a L θ λ] / (6 L θ + λ)$
	N	$Δ p^{S C 3 ~ N *} = [(4 L θ + 2 λ) Δ T] / (6 L θ + 2 λ)$
	B	$Δ p^{S C 3 ~ B *} = [(4 L θ + λ) Δ T + L^{2} θ λ - 2 a L θ λ] / (6 L θ + λ)$