You want to convert a PDF file to Word and keep the document format? pdf2doc.com is the best solution that I’ve been using so far.
Demo of this solution
In my test I’ve got perfect transformation respecting complicated formatting. You can check on your own and download the transformed file (link to the Word version).
Pricing of the solution
It seems to be free. I didn’t find any notion of pricing. I’ve tested it on 9 pages and 8 MB PDF file with no payment and zero subscription.