FYI - I have a shoulder counterweight for the EA50 on eBay. Bidding starts at $60.

Counter Balance Weight for Sony NEX EA50 Shoulder Camera | eBay (http://r.ebay.com/LeCw97)

Bought this for $130

Vocas Weight 1KG for Shoulder Support (Vocas Weight 1KG for Shoulder Support 0370-0210 B&H Photo Video (http://goo.gl/hXgSdh))
Vocas Weight Attachment Plate for Sony NEX-EA50 Camera (Vocas Weight Attachment Plate for Sony NEX-EA50 Camera 0370-0205 (http://goo.gl/Ioou0X))