Single face corrugated cardboard rolls are an ideal product to use for wrapping irregular shaped items, which require some protection.
It is typically used for larger items, deemed too heavy for wrapping only with bubble wrap. Corrugated cardboard can also assist in adding some structure and strength to the packaging, unlike bubble wrap.
We have got a limited supply of "thicker grade" cardboard rolls. These rolls are made of a thicker cardboard, and have a total diameter of around 62cm, compared to standard rolls which are around 50cm. The thicker grade cardboard is a clearance item, hence the low price.