That makes a lot of sense - if you could "read" the text under the redaction it wouldn't be much use!
OK - I suggest you look at post #1 in this discussion
which basically tells you how to extract the text from one pdf and then extend that to cover many pdfs in a folder.
Once you've got that working you need to find a way to
- Extract the 2nd line following "Bill To" to get "XXX CLIENT NAME 2XXX"
- Extract the 2nd dollar amount from the last line to get "110.25" (or whatever is there)
Personally, I would use the Search Using Regular Expression action to perform the extraction - but there are many other ways; a search of the KM forum will turn up many examples of the use of regular expressions and scripting.
Can't be of more help right now - it's bedtime!