Amazon PPC keyword not getting impressions?

Why an Amazon PPC keyword gets no impressions

A keyword is shown only when your ad is allowed into the auction for a search and wins enough of those auctions. These are the usual reasons it isn't, in the order to check them:

1. No featured offer. Amazon says advertised products must be eligible for the featured offer, the offer with the Add to Cart button. When another seller's offer holds it, or the page shows only "See All Buying Options", your ad sits out.
2. Out of stock, suppressed or ineligible. An ad with nothing to sell, a listing that isn't live, or an ad the console marks as ineligible doesn't show. The console's status column on the ad says why.
3. A negative keyword. A negative exact for the search, or a negative phrase inside it, on the ad group or the campaign blocks the keyword from that search.
4. The budget runs out. After a campaign spends its daily budget, none of its ads show until the next day.
5. The bid is under Amazon's suggested range. The range next to the bid estimates what recent winning bids for similar ads paid. Well under its low end, the keyword loses most auctions.
6. Few searches, or not relevant. If nothing above applies, the search may be rare, or Amazon may not see the listing as relevant to it. Exact match reaches only that search and close variants.

What bid to try

Raising a bid to the top of Amazon's range buys impressions, but it can buy them at a loss. A click is worth your price × conversion rate × target ACoS: a $39.99 product that converts 10% of clicks at a 30% target ACoS can pay $1.20 a click. So try the low end of Amazon's range, $0.75 in the example, and never more than $1.20. If Amazon's range starts above what a click is worth, bid what it's worth and accept fewer impressions, or lift the conversion rate (price, images, reviews) before paying more. Once the keyword gets clicks, set its bid from what it sells: the PPC bid optimization guide shows how.

Questions

How many impressions is too few?

Under about 100 in 30 days for a keyword you've had a few weeks. Above that, judge it on clicks, conversion and ACoS instead.

Should I just bid Amazon's suggested bid?

Only if a click is worth that much to you. The suggested bid reflects what others pay; it knows nothing about your margin.

Can MyProfit do this for every keyword?

Yes. Once a week the profit autopilot asks Amazon for its suggested bids on every keyword with under 100 impressions in 30 days, and proposes raising the ones bid below the range to its low end, capped at what a click is worth from your product's real profit. Keywords that do get clicks have their bids set from what they sell.