Good find! If you got it cheap you'll probably do very well with it.

Shrink by itself is not a condition, it only ensures that the contents are complete. The Acaeum values estimate a 50% premium over the relevant condition for shrink.
The rare items are listed on this page:
Rares Index
So for example a VFine R2 in shrink would be somewhere around $251 * 150% = $375-ish

Hope that helps you!

I'll give ya $20.

-- the author

Easily north of $400. Bart is dead on; there seems to be a shrinkmania currently.

Gazmondo wrote in Investigation of Hydell value:I'm debating on whether to sell it. I was thinking of grabbing the other 3 "R" modules but they are pretty pricey.

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Yep, that's the one.

ibm_ted wrote in Investigation of Hydell value:

Deadlord wrote in Investigation of Hydell value:Easily north of $400. Bart is dead on; there seems to be a shrinkmania currently.

Agreed.  Which leads me to the obvious question - how can a collector tell whether or not an item is in its original shrink-wrap or has been re-shrinked?  I qualified that question with "collector" since they will most likely not be removing the shrink to inspect the item's internal condition.

There are many threads that discuss this. I find experience is the only real way to know. Experience and quantity. The shrink wrap has distinct qualities from various TSR eras but there are always exceptions. The more you come across or collect the more you will just know, "this doesn't seem right" but even then it's not foolproof. I had an I6 Ravenloft that did not look characteristic of original shrink (there is a thread here somewhere) and the consensus was yep that's a re-shrink. I opened it eventually and there is really no indications it was ever re-shrinked. Insides were perfect, no rust, nothing. The next 2 exact same modules I come across in shrink had the same shrink characteristics so most likely it was original shrink. DOH! Now I have a near mint open one to admire though.