I bought 4 used LP's from various sources on GEMM back on August 8th. I thought I'd comment on my experience and ask whether others had similar experience.
To date, today is the 28th, I have received only 2 of the LP's and one of those is from Austria. The one from Austria was graded mint and it was. The one from a concern in Florida was graded mint and it wasn't. I actually got the wrong record from these folks, I ordered "Blind Faith" and got "Blind Date."
They were quick to rectify their mistake and at their expense.
The cost of shipping, mostly USPS Media Mail, has raised the price so high that I figure on more trips to Princeton Record Exchange, whose selection has dwindled greatly and prices have risen slightly. Still a better alternative than waiting a month for dubious quality.