I've read the 2nd and 3rd and I can't find anything about Walmart rising prices once monopoly is established. Can you point me more specifically, please?

EDIT: I read the 1st, after registering, but the only reference is to another article by the same author[1]. In that, there's seems to be a single statement: "In Dawson Creek, BC the reports have come in that after winning over local shoppers and forcing small business nearly into extinction, Wal-Mart raised prices to extra-ordinary levels". There doesn't seem to be any sources for that claim and I can't find anything in Google.