I've lucked into a first edition, second printing (1" deep box with black sides, as opposed to the earlier 2" deep box with the red sides) copy of the Stormbringer box set from Chaosium.

The box itself has a dished top and minor shelf wear but no split corners or tears and the contents are 100% complete and as new (even the counters are uncut). What might be a ballpark estimate on the value of this thing?

I'm going to, unfortunately, have to turn it around for quick sale as I've just received word that my medical benefits have been terminated due to mishandling of paperwork.

If you're talking about the one with the multiple rulebooks, that's actually a 1985 fourth printing that was incorrectly listed as a 1981 printing. The first through third printings contain only a single rulebook (they split the content into multiple rulebooks for the 4th printing).

I got my info from Wayne's, which I've found is pretty reliable for detailed info about various printings of old games (they specifically omit pricing information, however). Here's a link:

Elric/Stormbringer/Hawkmoon/Corum - Wayne's Books RPG Reference

Well, that's good news.

I found this post (from 2010) that tags you as helping put the following together .... Does this sound about right Steve?

Chaosium, Stormbringer box set:

Printing Information:

First  (July, 1981)

* Red box with a picture of Elric. Box lid states: "STORMBRINGER: Fantasy Role Playing in the World of Elric.  Created by MICHAEL MOORCOCK in his Novels. By Ken St. Andre & Steve Perrin."
* No â„¢ over the last R in Stormbringer.
* Stock number 2006-X on the side and back.
* 2" deep box (5 cm).
* One 144 page red rulesbook, without errata inside the front cover.
* Large map (brown/tan, 22x28"), reference sheets, cardstock silhouettes, sample character sheets, and six polyhedral dice (one 4-sided, one 8-sided, one 20-sided, and three 6-sided).
* Box sides are red.
* Box bottom: white box descriptions with blue text, over a blue on blue map.

First+ (1981?)

* Red box with a picture of Elric. Box lid states: "STORMBRINGER: Fantasy Role Playing in the World of Elric.  Created by MICHAEL MOORCOCK in his Novels. By Ken St. Andre & Steve Perrin."
* No â„¢ over the last R in Stormbringer.
* Stock number 2006-X on the side and back.
* 2" deep box (5 cm).
* One 144 page green (or possibly red) rulesbook with errata inside the front cover.
* Large map (brown/tan, 22x28"), reference sheets, cardstock silhouettes, sample character sheets, and six polyhedral dice (one 4-sided, one 8-sided, one 20-sided, and three 6-sided).
* Box sides are red.
* Box bottom: white box descriptions with blue text, over a blue on blue map.
* This print is a hybrid: The box and contents are identical to the 1st print, however the rulesbook with errata is clearly a second print.

Second (Unknown, box bottom dated, 1981)

* Black box with a picture of Elric.  Box lid states: "Michael Moorcock's STORMBRINGER: Fantasy Role Playing in the World of Elric.  Created by MICHAEL MOORCOCK in his Novels. By Ken St. Andre & Steve Perrin."
* â„¢ over the last R in Stormbringer.
* Stock number 2101-X on the sides and back.
* 1" shallow box (2.5 cm).
* One 144 page red (or possibly green) rulesbook with errata inside the front cover.
* Large map (red, 22x28"), reference sheets, cardstock silhouettes, sample character sheets, and six dice (see below).
* Box sides are black.
* No ISBN on box bottom above, ''Printed in the USA."
* Box Bottom is black with white text, and has a black and white illustration: "Grome and the Ship of Land and Sea."
* The boxed description on the box bottom states:

"INCLUDED IN THIS BOX--Stormbringer Rulesbook (art by Frank Brunner, welcome to the Young Kingdoms, character generation, weapons & combat, skills, sorcery, cults, creatures, hints for the game master, statistics for the characters from the novels, sample summonings, game tables & charts, introductory scenario).  Map of the Young Kingdom (22x28"), Playaids (eight major character forms, sixteen minor character forms, eight demon forms, eight page reference booklet, twenty-five character & creature silhouettes), six polyhedral dice ( one 4-sided, three 6-sided, one 8-sided, one 20-sided)."

Second Edition (1985)

* Black box with a picture of Elric.  Box lid states: "Michael Moorcock's STORMBRINGER:  Fantasy Role Playing in the World of Elric.  Created by MICHAEL MOORCOCK in his Novels. By Ken St. Andre & Steve Perrin."  
* â„¢ over the last R in Stormbringer.
* Stock number 2101-X on the sides and back.
* 1" shallow box (2.5 cm)
* Three rulebooks, map (17x22"), reference sheets, character sheets, and three dice.
* Box sides are black.
* ISBN on box bottom left, above 'Printed in the USA."
* Box Bottom is black with white text, and has a black and white illustration: "Grome and the Ship of Land and Sea."
* The boxed description on the box bottom states:

"INCLUDED IN THIS BOX--Players Book (welcome to the Young Kingdoms, character generation, movement, weapons & combat, skills, poisons, etc.). Magic book (sorcery, lesser demons, elementals, Beast Lords, cults of Chaos, cults of Law). Gamemaster book (hints for the gamester, a complete short adventure, statistics for characters from the novels.). Map of the Young Kingdoms (17x22"). Reference Booklet (explanation of the box contents, character sheets, 8 pages of reference tables, prices, etc. Three polyhedral dice (1D6, 1D8, 1D20) are included, enough to play the game."

FWIW, I ended up selling my box for $130 (including Priority Mail shipping and some packing materials, so closer to $110). I ended up using the RPGGeek printing info and referred bidders there and Wayne's for research since they agreed with each other and were independently verified.

red_bus wrote in Stormbringer 1e box set?:Well I am glad we were all able to help.

You were! Thank you, all!

TheHistorian wrote in Stormbringer 1e box set?:Great! I'm glad you got so much for it!

Me, too. The box was in Fair condition but the contents were really like new. I didn't want to sell it (having just acquired it myself) but my healthcare benefits were revoked and I needed to cover my monthly premium out of pocket in a hurry. That said, it was a really awesome box set and I hope the buyer enjoys it.

Interesting. I know one of them gave me fits trying to find, but I don't recall which at this point. Seems like they should all be out there.