Please add sales description data

[Jmqcooper1]

Hi,

Your open source repo is great, however, it is missing the sales information if products are on bonus which is vital for people to find when it comes to best groceries/ cheapest products.

Could you please add this under each product with "s": and then the sales text If not there then do not include or do null.

Thanks so much in advance @sjoerdvanderhoorn