Batch reduce file size of pages documents?

Hello!

I'm using a retina macbook pro, I use pages to create quotes for work, and over the last year or two have created thousands of pages documents!

I export each one as a PDF to email, but leave the original doc untouched, however, each pages file takes up 8mb approx and they're eating up my HDD!!

I can open each file individually and click reduce file size, which reduced them to around 800kb

Is there anyway to create a script or automater action that will open up each file within a set folder and reduce the file size to save my poor little SSD?

Thanks

Tom