Cost per reachable owner divides total spend by the number of owners an attempt reached during the test. Include the platform fee where you are buying the platform for the trace, and leave it out where the subscription was already paying for list building you would keep anyway.
PropStream charges 12 cents per contact on Essentials and 10 cents on Pro and Elite, with the first traces bundled through PropStream Connect [10]. A 150-record sample therefore costs $18.00 on Essentials, sitting on top of a $99 monthly plan [10]. Skip Genie charges 17 cents per record with bulk lists as low as 13 cents, which brings the same sample in between $19.50 and $25.50 [7].
PropertyRadar meters contacts by plan rather than charging per record [3]. Solo at $119 a month includes 250 phone and 250 email contacts, Team at $249 includes 500 of each, and Business at $599 includes 2,500 of each [3]. A 150-record sample fits inside the Solo allowance, so the marginal trace cost is zero there and the plan fee carries the whole denominator [3].
Additional contacts past those allowances run 8 cents on Solo, 6 cents on Team, and 4 cents on Business [4]. One purchase covers every phone number and email address the platform holds for that person, so a record returning four numbers costs the same as a record returning one [4].
The arithmetic below is illustrative, using invented return counts to show how the division works. Suppose the 150-row sample comes back from PropStream Essentials with contacts on 104 records and 38 conversations that reached the owner of record. Trace spend of $18.00 divided by 38 gives 47 cents per reachable owner, and adding the $99 plan fee for a month bought only for this test raises it to $3.08 [10]. The same sample through REISkip at $22.50 with 34 owners reached lands at 66 cents with no platform fee attached [8], so the ranking flips depending on whether you keep a subscription anyway.