I just received from Major Drill. I was wondering what the price should be seeing that none are for sale.

There are about 180 of them on gallery serach, and it has a chance to be rereleased. I don't know of any use for it on the site, it looks like its a cheapo weapon. I would think the only person who would need one would be someone looking for item hunt.

I suspect that if I really wanted one, I could get one for between 1-3mil.

That being said if you don't need the sP there is no harm in shooting for the 15-25mil range. It can be surprising how little research people do before buying something off search for the convenience of it.

Keep in mind, it is not a wearable and it is not edible and it seems to be a lack luster sort of weapon, so most people would be either looking for it for a TC or Item Hunt. If you leave it unpriced in trades, you're much less likely to get an Item Hunter, because you'd have to be on in the 30 minute window that they need it. If the item hunter is high enough level and REALLY wants to finish the game, with yours being the only one for sale, I could easily see it selling in your shop for 25M or more. But if you're looking for someone who is TC hunting and doesn't have that time pressure, they may not bite for that kind of price. Either way, good luck.

Someone is already trying to undercut you on search now.

It's not a rare item. With competition, I say price it at 5.5mil and hope it sells. 5.5mil gives you a little room to play the small undercut game without running into autorpicers at 5mil.