Unfortunately you can't specify no return policy on amazon, unlike ebay. This is a good thing for buyers. I sold mine recently and I'm waiting for the 30 days to expire. My lens works fantastically but people can invent any reason for return and I wouldn't want to deal with that. Unfortunately ebay charges too much fee now and I have switched to amazon as my primary trading site.
5DMK3, M5, 24-70 2.8L II, 16-35 F4L IS, 100 2.8L, 70-200 2.8L IS II, 35F2 IS, 135L, 70-300L, 70-200L F4 IS, 600EX-RT x2, EOS M IR converted, efm 11-22, efm 28 macro, efm 18-150