A Space Hulk Problem

So. I got 3 of the multiple copies of pre-ordered Space Hulk games in.  I had 3 pre-orders.  I was annoyed since I wanted a copy myself but... whatever.

Now, one of my customers has cancelled his pre-order leaving me with a copy free.

I'm not debating what to do with the copy.  My options seem to be:

a) Put the game up and let whoever buys it, buy it at our normal pricing

b) Put the game up, but jack up the pricing significantly since it's out-of-print already

c) Keep the game for myself.

d) Put the copy up as part of a prize for a contest.  What contest still seems to be the question.

Option (a) doesn't seem to do much (well, beyond making 1 customer happy).  So it seems the least interesting. 

Of the options available, I feel that option (b), while producing the most in profit, is probably not that great for the business.  After all, we're a discount board game store and jacking up prices just 'cause something is out-of-print seems rather counter-intuitive for what we want to do.  It's also likely to potentially alienate customers.  

Option (d) seems to work somewhat,  but until I know what contest I take, I'm not sure what the result could be.

 Of course, option (c) is really what I want to do.  And is realistically, the worst option for the business but the best for me.