look at the bottom of remedy’s description in the market:
What does it mean?? will remedies vanish in 4 years?? 
Hmmm…when I hover over it in the market view, it says this:
No mention of an expiring offer.
It’s only when I look at the parameter view, I see what you see:
My guess is that there either was some special offer on it at some point in the past, or there will be some special offer on it in the future, and the verbiage is either outdated or premature. Either way, I doubt it’s going to be removed…but then who knows.
It’s part of the lore, says it comes from the Waderkvarn corporation and this is a pre-crossout ad for the “not-a-flamethrower”
Ah, that makes sense, thank you!! 
it might be the time that crossout is scheduled to close down. at this pace there is no chance it survives that long though