I think the only time I came close I just checked my Discogs collection real quick. But I guess if your're certain you don't have it, then why check, amirite?
@Tortured Diaper Baby Dept I somehow missed logging it in my collection on discogs. In addition, the new version I picked up has alternative cover art.
@Tortured Diaper Baby Dept same as Renegade, I checked but I must have either forgotten to log it or discogs randomly deleted it. I was great about remembering my collection until I got to about 1500, now I'm terrible.
I have way too many gaps in my collection because I forget to log things so this has happened quite a few times. My discogs is probably about 97% accurate.
I ordered the same record in two separate Discogs orders only a couple of days apart once by mistake. Fortunately it was very cheap (under $10 total for both) so it didn't sting too bad, but I felt pretty silly.
Surprisingly never, given my memory issues - I guess knowing what records I have is my superpower. Although - I have pre-ordered many releases not remembering I've already pre-ordered. It kinda sucks for those orders that are "all sales final" and expensive box sets.