EXPLANATION:

Second to last clip:
The women in the clip mispronounces the name "幸華(こうか)" with a heiban pitch accent, instead of the correct atamadaka pronunciation. The man, Sanma, immediately corrects her, and then goes on to make fun of her mispronunciation. In order to do this, he looks for a word which is normally pronounced the specific way that the women MISPRONOUNCED 幸華, and likely because he only had a split second to think, he incorrectly chooses the word "高価(こうか)". This doesn't work because the correct pronunciation of "高価" is ALSO an atamadaka pitch accent (remember, the woman's original mispronunciation of 幸華 was with a heiban pitch accent). In order to convey the specific "こうか" that he had in mind, he explains the kanji: "高(たか)い値(ね)って書くのそれは?". Here Sanma makes a second mistake (again, likely because he only had milliseconds to think): he mixes up the two kanji 価 and 値 (understandably; they look similar and share the same meaning). This is where I ended the above clip, but in the original, a third…