Perpetua Alternative Without a Percentage of Ad Spend
Last updated: 2026-08-31
TL;DR
Perpetua drives ads from $695/mo plus a percentage of spend above $10K. If what you want is not a driver but an auditor — something that grades the spend rather than growing with it — that is a different product, and it is priced flat from $29/mo.
Sellers searching for a Perpetua alternative usually mean one of two things, and they lead to opposite answers. If you want another engine to manage bids, the honest alternatives are Teikametrics, Scale Insights or Amazon's own free Ads Agent. If what actually bothers you is paying a percentage of the spend the tool controls, the alternative is not another optimizer — it is separating the driving from the grading. A fee that rises with ad spend is a normal model and not a dishonest one, but an AUDIT priced that way has a conflict of interest, which is why measurement here is flat-fee on purpose.
The tools compared
AgentXray
From $29/mo — Flat fee, no commission on ad sales; every feature at every tier
Measurement layer for Amazon sellers: settlement-verified profit, break-even and per-arm net contribution.
Strengths
- Profit verified against settlement line items, not estimates
- Net contribution per advertising arm — the core metric
- Flat from $29/mo — never a percentage of ad spend
- Free no-login tools; no commission
Best for: Sellers who want the ads they run — by hand or by any optimizer — audited against the money that actually landed.
Perpetua
$695/mo+ — Essentials $695/mo up to $10K ad spend; Growth adds % of spend; no free trial, no annual billing
Goal-based ad optimization platform for Amazon and other retail media.
Strengths
- Goal-based, always-on bid optimization (SP, SB, SD, DSP)
- Strong creative/video ad tooling (Perpetua Studios)
- Established mid-market/enterprise base
- Multi-retailer: Amazon, Walmart, Instacart
Best for: Brands with $10K+ monthly ad spend that want goal-based automation and are comfortable with percentage-of-spend pricing.
Feature comparison
Driver or auditor
| Aspect | AgentXray | Perpetua |
|---|---|---|
| Manages bids and budgets | No | Yes, goal-based |
| Pricing model | From $29/mo flat | $695/mo + % of spend above $10K |
| Fee moves with your ad spend | No | Yes |
| Net contribution per ad arm | Yes, from settlement | Platform metrics |
Verdict by use case
- Replacing the optimizer itself: Perpetua
- Removing percentage-of-spend pricing: AgentXray
- Independent check on any optimizer: AgentXray
If you need something to run the campaigns, this is not that and you should not buy it expecting it to be. If you want to know whether the campaigns made money — run by Perpetua, by anything else, or by hand — that is what a flat-fee auditor is for.
Frequently asked questions
- What actually replaces Perpetua's optimization?
- Amazon's own Ads Agent is free and increasingly capable; Teikametrics and Scale Insights sit lower in price. This page does not pretend measurement substitutes for any of them.
- Why is percentage-of-spend a problem for an auditor?
- Because the auditor's revenue would rise with the number it is grading. That is fine for a driver being paid for growth and wrong for a referee.
Research sources
- Perpetua pricing analyses and site — accessed 2026-08
- AgentXray settlement-measured economics — internal, 2026-07/08