Cryptic crossword clue
High price — necessity, perversely to secure botched DIY 4,3

The most common and most likely answer to this crossword clue is the 4 plus 3 letter word TIDY SUM

I've seen this crossword clue in The Guardian
T
I
D
Y
S
U
M

Buddy explains!

The straight part
We know that "High price" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case high price = tidy sum.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

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