I still don't know how someone can pay $500 when the starting price was $100 and he was the first and only bidder. At least with Ebay's automatic bidding, I would have thought that this person should have paid only $100, unless I misunderstand how their system works:
"To set up automatic bidding on an auction listing, enter the maximum amount you’d like to pay for the item and select Place bid. We’ll bid in increments on your behalf to keep you in the lead but only up to your limit." Could it be that this person made a "Buy Now" bid? My experience with Ebay is extremely limited, as you can tell.
In any case, the two items that sold for £34 and £40 more recently were described as and looked like E (which is really the highest grade I would ever give a shellac record unless it was virtually unused "old new stock").
Given how often the record appears on Ebay, it's not very common, but I also wouldn't call it extremely rare. Django was popular, after all. EX copies seem to go for between £20 and £40. Some may go for even less but popsike doesn't record sales under $20.
Someone actually paid $500 on Ebay on March 31, 2019: popsike.
Because this is by far the highest price ever paid on Ebay for a Django record, it's the first one that shows up when you search for "Django Reinhardt" on popsike.
Not sure why the price is so high since there was only 1 bidder and the starting price was $100. It was advertised as "E- nice glossy copy! Light marks with pressing(?) bump on Le Soir", not Near Mint.