Option prices are not adding on to product price

[afiumano]

Since this product was using image swatch dropdowns I had to generate variants. I had originally selected: "Variant Price is set by the Inventory Product". When I changed the selection to "Variant Price is set by the Master Product and its Attributes" it started working properly.

[alphabet]

Before regenerating Inventory Variants you may have to first delete the existing variants. (and pack DB)

I had a similar issue so searched products by variant name and found more than one entry so it indicated a problem.