Complex sentence: The property was undervalued in an effort to achieve a quick sale and was even put on eBay and in a documentary for Channel 4 in which the programme unfairly made allusions to the roof having holes in it.
Split into simpler sentences: The property was undervalued in an effort to achieve a quick sale and was even put on eBay and in a documentary for Channel 4. Unfortunately, the programme unfairly made allusions to the roof having holes in it.