Description
https://bookingwp.com/forums/topic/selecting-miltiple-slots/
To achieve this pricing with the quantity input addon:
– quantity 1 (120min) = 790€ (default product price)
– quantity 2 (180min) = 1.290€ (790 + 500)
– quantity 3 (240min) = 1.570€ (790 + 2×390)
– quantity 4 (300min) = 1.960€ (790 + 3×390)
