Stuck in a ranking plateau — low-ticket product, high CPC, and ad budget gets eaten by a few small keywords. How do I break through?

Quick note on ASIN targeting: it works, but it needs monitoring. Competitors change prices, run deals, or drop ratings — all of which affect how your ad performs against them. Check in weekly and pause any ASINs that stop converting.

On the three exact keywords you’re running — if they’re already pulling decent conversion, double the budget so they run through the whole day. Keep them running for 1–2 weeks without touching them. Once they’ve been consistently in top 5–10 for 10+ days, then test if you can reduce spend without dropping.
Also, if you’re seeing 14–15% conversion on broad, that’s strong. Scale that while keeping ACOS in check, and use the search term report to pull new exact terms into your core campaigns.

I’d also add: take a look at your auto substitutes campaign. CPC is lower than your exact campaigns, but it’s driving nearly half your ad orders. That’s a signal.
Instead of forcing more exact campaigns, try:

• Pull the ASINs that convert in your auto substitutes campaign and move them to a dedicated ASIN targeting campaign
• Test broad/phrase campaigns using your highest-converting exact keywords as stems, with negatives to avoid overlap

If you’re seeing better conversion in broad than exact, that’s worth leaning into.

The “drop ad spend → ranking drops” thing is normal until your organic conversion volume can support the position on its own.
Think of it this way: each position has a required conversion volume to stay there. For smaller keywords, the gap between positions is small. If ads are providing 30% of your conversions on that term, removing them drops you below the threshold for that position.
Two ways out:

• Push the keyword higher until the organic traffic itself generates enough conversions to hold it
• Build more keywords so no single term is critical to your total volume

Either way, spreading thin across three keywords won’t get you there.

Your situation is actually a classic “plateau” phase. Your product is clearly competitive — the system has given you stable traffic — but your overall weight isn’t enough to break into the next tier.
The issue isn’t that you’re “locked in.” It’s that you’re not yet at the point where you can pull back on ads. The foundation isn’t fully there.
What I’d suggest:

• Daypart your budget. Don’t let it burn out by noon. Pull hourly data from your ad console and shift budget to your peak conversion windows. This alone can increase conversion without spending more.
• Expand your keyword pool. If three ABA 100k keywords are working, find 10–20 more in the same range (80k–150k). Lower bids, test them in bulk. Volume from multiple small terms adds up.
• ASIN targeting. In a semi-commodity category, this is gold. Find competitors in the top 50 with worse quality, higher price, or lower ratings. Target their ASINs directly. When a shopper sees your product next to theirs — better materials, lower price — conversion can be surprisingly high.
• Use virtual bundles. You mentioned you have multiple variations. Bundle your top-converting color/size with a higher-margin version. Use that to pull up overall profitability.

On attacking head terms: not yet. Your $110/day budget will disappear in 30 clicks on a head term, and you won’t get enough data to know if it’s working. Build your foundation first. Once you’re stable in top 50 with more traffic sources, then test head terms.