Question about XSLT transformation for a data flow

[Russell]

Hi everyone,
I'm currently working on integrating an XML feed that lists various bonus offers and online casino reviews (such as welcome bonuses, free spins, etc.). It's a bit of a niche topic, but the volume of data is starting to get pretty heavy. I'm using Oxygen to structure it all, but I'm struggling a bit with my XSLT stylesheet. I would like to automate the generation of a comparison table that sorts bonuses by deposit type, while maintaining a clean output in WebHelp. Has anyone here worked on stylesheets for this type of affiliate site before? I'm having trouble rendering special characters (currency symbols) during PDF conversion.