Make mom happy in three seconds this Mother’s Day. This infographic by Pythian, looks at online spending for Mother’s Day, why website speed matters and what an online retail site must do in under three seconds to avoid cart abandonment. According to the infographic, $152.52 is the average Mother’s Day order value. There are 121,951,299 Mother’s Day orders and $18.6 billion in online sales for Mother’s Day. 