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Enabling Undercutter can cause your prices to be lower than expected. Undercutter will make your prices fluctuate up and down.

Enabling Overrides can have unwanted effects if not configured properly.
You may need to enter 0 in the % box or margin fixed box.

Enter this formula into a spreadsheet or in your Chrome URL to verify
= sale_price  - (sale_price  X 10%) - (sale_price  X 2.9%) - ( 0.30 ) - ((source_price  + source_shipping) X profit %) - (profit_fixed) - (AO Fees)
Replace sale_price with your current listing price
Replace source_price  with the cost of the items from the supplier
Replace source_shipping with any shipping costs (usually only from Walmart)
Replace profit % with your % margins
Replace profit_fixed with your fixed margins
Replace AO_Fees with 0.20 cents by default

If you're selling on Amazon instead of eBay change the 10% to 12%

Check the actual offers page and make sure it's available for Prime

Your handling time may be too low, we suggest 5 days or more

Does it have an override forcing the quantity to 0?

Is it only 3rd party merchant fulfilled?
Copy this entire code below (but replace the ____ with your ASIN)
https://www.amazon.com/gp/offer-listing/
_____
/ref=olp_f_new?ie=UTF8&f_primeEligible=true&f_new=true