The Lewsearch Report/Pulse
Does a longer price-protection window bring holiday purchases forward?
· Exploratory simulation · Not graded
This synthetic test did not demonstrate a clear buying lift. Average buy-now probability fell from 37.93% to 35.85%, but additional checks leave the direction uncertain. This is not evidence that longer protection hurts real sales. It is neither a human poll nor a sales forecast.
What changed?
Imagine buying unbranded wireless headphones for $80 on November 7. If the same retailer later lowers the price, you can request the difference with a receipt.
Only the request deadline changed: 14 days, through November 21, versus through December 24. All other stated terms stayed identical, including request effort, delivery and returns. No future discount was promised. Both offers were hypothetical.
What the test found
Of 400 synthetic profiles, 392 had valid results for both offers, retaining 98.66% of the scheduled statistical weight.
| Action | 14 days | Through Dec. 24 | Change (points) |
|---|---|---|---|
| Buy now | 37.93% | 35.85% | −2.08 |
| Wait | 25.55% | 24.54% | −1.01 |
| Look for an alternative | 9.75% | 11.76% | +2.01 |
| Not buy | 21.41% | 22.30% | +0.89 |
| Unsure | 5.36% | 5.56% | +0.19 |
Figures are rounded; changes use unrounded values. Without weighting, the buy-now change was −1.27 percentage points.
Why the result is inconclusive
A post-run check resampled profiles 10,000 times, preserving their regional and age-group mix. The middle 95% of estimates ranged from −4.18 to +0.08 points, crossing zero. This measures sensitivity to profile composition, not human sampling error or all model uncertainty.
Replacing original measurements with 36 valid repeats moved the estimate to −1.47 points. Only one offer was repeated for each of 40 profiles, so this was not a full repeat of the comparison.
Allowing every possible value for eight missing main measurements puts the 400-profile difference between −2.98 and −1.63 points. That range addresses missing data only, not overall uncertainty.
Methods and limitations
A separate 40-profile preliminary check produced 79 valid measurements out of 80; 77 correctly assessed all offer facts, passing the preset minimum of 76 for each check. Two wrongly said a price drop at another retailer qualified; one could not be assessed. Main measurements did not independently check understanding.
There were 920 scheduled measurements plus 92 permitted retries: 1,012 attempts. Checks rejected 105 attempts; 13 measurements remained missing—one preliminary, eight main and four repeats. Rejected outputs were retained; missing values were not filled in.
An initial timing estimate paused execution. A reviewed continuation finished within the original time and request limits, without changing the question, profiles or scoring rules.
Profiles were not refreshed for this study. Historical information, demographic groupings and weights limit interpretation. This is not a representative human sample; results apply only to this hypothetical comparison.
Source and related reading
NRF’s October 28 holiday-shopping report supplied context about deals. Its findings were not shown to profiles or used to calibrate answers.
Related: Holiday return windows · Lewsearch methodology