MACS stands for Max Advertising Cost per Sale. Setting MACS in Flywheel enables bid automation, and Flywheel will begin to calculate your bids and publish them directly to Amazon.

What is MACS?

MACS communicates your willingness to spend with our bidder. It indicates the percentage of sales you are willing to spend to try and earn a sale.

For instance, if your product sells for $10, you set your MACS to 10%, then you are indicating to our algorithm that you are willing to spend up to $1 per click.

How do MACS work?

MACS are set at the campaign and ad group level based on your product advertising goals and product margins. Our bidding algorithm will factor in the potential payoff, conversion rate, and MACS to calculate bids at the keyword and ad group level.

The MACS input helps our bidding algorithm calculate the optimal bid. It dictates to the bidder your willingness to spend. Lower MACS will tell our algorithm to bid more conservatively, while MACS will tell the algorithm to bid more aggressively.

If your goal is profitability, consider a lower MACS. This indicates that the amount that you’re willing to spend on bids is low and bid changes will occur in smaller increments.  If your goal is to launch a product, consider a higher MACS. This indicated that you’re willing to spend more on bids and you’ll generate clicks faster.

MACS = Your Willingness to Spend

Now that you know what MACS are, let's learn how to set them based on your goals. 

Next: How to Set MACS: The Basics

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