http://www.thinkgeek.com/gadgets/tools/bb32/? -
destination URL
cpg=ogpla -
don't know, but would guess the the gpla bit relates to the referrer as being Google Play
&source=google_pla -
identifies the source as Google Play
&gclid=CLH-5OHO468CFWUaQgodYVXNAg -
Google's unique click identifier
So, personally, in this case I'd say no - there isn't an affiliate link in there (unless Google is working on commission ... lol).
I expect pretty much all of that "extra" in the URL relates to tracking through Google Adwords/search etc.