So I'm tryig to estimate the cost when incresing/decreasing the Target CPA
using the *campaign_simulation.target_cpa_point_list* feature.
I am confused because from what I understand, the cost of the campaign is
generally equal to Target CPA * Conversion Count (that's what I see in my
reports)
But in the simulation results, the *cost_micros* field given by the API is
very different to what I calculate, using *my_initial_cpa* *
*target_cpa_scaling_modifier* * *biddable_conversions*
(*my_initial_cpa* is the Target CPA at the time I query the simulation)
(*target_cpa_scaling_modifier* and *biddable_conversions *are fields of the
points of the point list)
Here's an example with a campaign running in production:
Initial target CPA is 468750 micros
-------------------
bid simulation #0
target_cpa_scaling_modifier: 0.5 | biddable_conversions: 51.19226837158203
| cost_micros: 4620000
Modified cpa = 468750 * 0.5 = 234375
Calculated cost = 234375 * 51.19226837158203 = 11998187.899589539 != 4620000
-------------------
bid simulation #1
target_cpa_scaling_modifier: 0.75 | biddable_conversions: 65.18894958496094
| cost_micros: 8910000
Modified cpa = 468750 * 0.75 = 351562.5
Calculated cost = 351562.5 * 65.18894958496094 = 22917990.08846283 !=
8910000
-------------------
bid simulation #2
target_cpa_scaling_modifier: 0.9 | biddable_conversions: 72.57461547851562
| cost_micros: 12930000
Modified cpa = 468750 * 0.9 = 421875
Calculated cost = 421875 * 72.57461547851562 = 30617415.90499878 != 12930000
-------------------
bid simulation #3
target_cpa_scaling_modifier: 1 | biddable_conversions: 75.99127960205078 |
cost_micros: 14790000
Modified cpa = 468750 * 1 = 468750
Calculated cost = 468750 * 75.99127960205078 = 35620912.3134613 != 14790000
-------------------
bid simulation #4
target_cpa_scaling_modifier: 1.1 | biddable_conversions: 77.61875915527344
| cost_micros: 16280000
Modified cpa = 468750 * 1.1 = 515625.00000000006
Calculated cost = 515625.00000000006 * 77.61875915527344 =
40022172.68943787 != 16280000
-------------------
bid simulation #5
target_cpa_scaling_modifier: 1.25 | biddable_conversions: 84.133544921875 |
cost_micros: 22250000
Modified cpa = 468750 * 1.25 = 585937.5
Calculated cost = 585937.5 * 84.133544921875 = 49296998.97766113 != 22250000
-------------------
bid simulation #6
target_cpa_scaling_modifier: 1.5 | biddable_conversions: 94.05055236816406
| cost_micros: 31340000
Modified cpa = 468750 * 1.5 = 703125
Calculated cost = 703125 * 94.05055236816406 = 66129294.63386536 != 31340000
-------------------
bid simulation #7
target_cpa_scaling_modifier: 2 | biddable_conversions: 111.24790954589844 |
cost_micros: 47110000
Modified cpa = 468750 * 2 = 937500
Calculated cost = 937500 * 111.24790954589844 = 104294915.19927979 !=
47110000
-------------------
bid simulation #8
target_cpa_scaling_modifier: 3 | biddable_conversions: 127.6584243774414 |
cost_micros: 74340000
Modified cpa = 468750 * 3 = 1406250
Calculated cost = 1406250 * 127.6584243774414 = 179519659.28077698 !=
74340000
-------------------
bid simulation #9
target_cpa_scaling_modifier: 4 | biddable_conversions: 130.610595703125 |
cost_micros: 100050000
Modified cpa = 468750 * 4 = 1875000
Calculated cost = 1875000 * 130.610595703125 = 244894866.94335938 !=
100050000
-----------
Details:
I'm using modification_method = SCALING
My query:
SELECT
campaign_simulation.target_cpa_point_list.points
FROM
campaign_simulation
WHERE
campaign_simulation.campaign_id = ${campaignId}
AND
campaign_simulation.modification_method = SCALING
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