Need to fix eBay rss feed script

I have a script that (supposed to) display eBay items from the rss feed, but it hasn't been updated after the eBay changed the format. It may need a change of one line as it displays correctly when I enter exact rss feed, but fails when I use tokens.
I got permission from the author (who is not supporting it any more) to fix it.

For somebody that knows the eBay rss feed - it shouldn't take more than 5 minutes

I forgot to mention that I'm willing to pay...