I think I'll get a box. I might be able to use them in the Joye CC but, then again, the air flow system in that is the same as the Eroll... just a longer distance for the air to go.
Edit: All I found at the USA Janty site was called JANTY eGo-C ATOMIZER HEADS NORMAL PACK 5 and they're $23.99 a box of 5 so no different than Joye.
https://usa.janty.com/index.php?pag...egory_id=178&option=com_virtuemart&Itemid=177
I came across someone selling the 5-packs for $14 on ebay, but the listing is ended. There are pictures of the inside of the atty that show the difference if you're curious (scroll down to the auction, then view the 3rd image). The coil is wrapped around a fatter wick, which is probably the reason for the harder draw ccm2000 said they have. Maybe that fatter wick obstructs the air flow.
That ebay seller also sells on Bonanza (I'd never even heard of that site until this thread), so it's probably the same person ccm2000 bought them from before. Who knows how he's getting them cheap, but if he does another auction at some point, I may pick up a pack to try.