Why price ia not scraped on bulk?

@viesturs
@leemeng
Please help me guys.
I am trying to scrape the sku and the price of all products on this website. All products have two variants like case and single. I used element click to do that. Price is not scraping.

Url: http://shop.treeoflife.co.uk/categories/

Sitemap:
{"_id":"tol-all","startUrl":["https://shop.treeoflife.co.uk/categories/"],"selectors":[{"delay":0,"id":"product","multiple":true,"parentSelectors":["_root","page"],"selector":".product a.product-item-link","type":"SelectorLink"},{"clickElementSelector":".product-view-actions select.form-control option","clickElementUniquenessType":"uniqueCSSSelector","clickType":"clickOnce","delay":1200,"discardInitialElements":"discard-when-click-element-exists","id":"wrapper-click","multiple":true,"parentSelectors":["product"],"selector":"body","type":"SelectorElementClick"},{"delay":0,"id":"sku","multiple":false,"parentSelectors":["wrapper-click"],"regex":"","selector":"div[itemprop='sku']","type":"SelectorText"},{"delay":0,"id":"price","multiple":false,"parentSelectors":["wrapper-click"],"regex":"","selector":"#maincontent > div.columns > div > div.product-info-main > div.product-info-price > div.price-box.price-final_price > span.special-price.normal-price > span > span > span > span.price","type":"SelectorText"},{"id":"page","paginationType":"auto","parentSelectors":["_root","page"],"selector":"div:nth-of-type(7) strong.page, div:nth-of-type(7) a.page","type":"SelectorPagination"},{"delay":0,"id":"vat","multiple":false,"parentSelectors":["wrapper-click"],"regex":"","selector":".col-sm-7 div:nth-of-type(1)","type":"SelectorText"}]}