Forced Price Breaks on In-App Product

I have an app with an in-app product we need to set at 16.99. When I go in to set the price, 16.99 isn't an option. The options go from 14.99 to 17.99. Why can't I choose the price we want for our in-app?

Thanks.

Forced Price Breaks on In-App Product
 
 
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