bulk purchasing
purchase of much larger quantities than usual, for a [unit price] that is lower than the usual
en-US/ˈbʌlk ˈpɝt͡ʃəsɪŋ/
en-GB/ˈbʌlk ˈpɜːt͡ʃɪsɪŋ/
purchase of much larger quantities than usual, for a [unit price] that is lower than the usual