In the past (perhaps till UNSPSC 7.xxx) UNSPSC codes used to be available as spreadsheets for free. But now, they are available for free only as pdf and non-members have to pay $$. Check out UNSPSC Codes section for more information. This seems like an annoying tactic by the UNSPSC.org in that it want to make it a free standard so that there is a wider adoption and at the same time trying to charge for a structured format. They are supposed to come with a newer version every 6 months and they are charging $50 for each language. So, essentially companies have to shell out $100 per year.
But there are open source pdf libraries out there that can extract text out of pdf files. Infact, adobe itself claims to have a pdf to text converter. All you have to do is send your pdf and get the text back in email (though this didn’t work for me at the moment when I tried it).