Pricing display incorrect Home/Product page Michelangelo theme.

Good Day

Pricing on home/ product category page do not display correctly with Michelangelo theme.
Pricing formula:
$30.00 < cost < $50.00: cost * 1.50

It is displaying $47.00 on home/ product category page, when navigating to the actual product it displays US $103.23.
Question, please also please explain the formula. Cost $30 * 1.50 = $45, why do the product display $103.23?

Please assist as this can drive away buyers.
 
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