If anyone is interest in cheap mixed subnet IPS of USED dinged up (not scorched earth) space, allocations sold as follows.
/21:
/22, /23, /24, /24
/21:
/23, /22, /24, /24
/21:
/24, /24, /22, /23
/21:
/24, /24, /22, /23
/21:
/23, /24, /24, /22
/21:
/22, /24, /24, /23
/21:
/22, /24, /24...