I'm in search of a way to batch extract data from PDFs into Excel?

Right now, I have about 300 invoices sitting in a folder and the thought of typing these into a spreadsheet manually will definitely take lots of my time. Now the thing is most of them are the same layout but there are a few outliers. I’m thinking there may be a way to automate this directly in Excel or a tool that isn't going to cost me a fortune, I really don't want to spend my entire weekend on data entry.

Thanks in Advance.