PDF, free
Open the .cwk file above and click "Save as PDF". The PDF keeps the page size, margins, fonts, tables and pictures, and its text can be searched and copied.
Word and Excel, with the unlock
Word processing documents become .docx files with their formatting, tables, headers, footers and pictures. Spreadsheets and databases become .xlsx workbooks. Pages, Numbers, Word, Excel, LibreOffice and Google Docs all open them.
A whole drive of old files
With the unlock, drop a folder (or a ZIP of one). You get back one ZIP that mirrors the folders: a PDF and a Word file for every document, an Excel file for every spreadsheet, and a list of anything that couldn't be opened and why.