Example of coupon price - to be respected in data
https://www.pilulka.cz/truelife-sonicbrush-compact-sonicky-kartacek
correct result: currentPrice 836, originalPrice 1045

Exaple of coupon price/discount from already discounted price - to be respected in data
https://www.pilulka.cz/lyss-v34-belici-korektor
correct result: currentPrice 359, originalPrice 529

Example of coupon club price - to be ignored
https://www.pilulka.cz/beauty-of-joseon-relief-sun-rice-probiotics-ochranny-opalovaci-krem-spf-50-50-ml-1
correct result: currentPrice 319, originalPrice null (as not discounted)