I've bought a bundle of vinyl a few times now from @ahartig, probably 10 titles or so total. They have all lived up to my expectations except for two LPs in the most recent batch of five he sent my way, which had a couple of flaws that wouldn't have been caught by a visual grading or casual playback. I contacted him and he immediately agreed to a return and issued me a refund including the return shipping cost. Not a lot of people these days that do business in such a considerate matter. 
Cheers
Nathan
Cheers
Nathan
