What's the value of?...

[GazGalaxy]

Hey all. Hoping to get some opinions of how much this CE is worth. It's post sale unfortunately, my fault for not doing the proper homework, but still wanna try nail the d### that sold it to me... a Crysis 2 Nano Edition. Advertised as the PS3 version. Bought it for (roughly converted) 125 Euros. The guy, from an online competition, won the XBox 360 version. So the outer sleeve is for the X360. He swapped out the disc and placed an LE disc for PS3. Also placed LE DLC in the box. Keeping in mind non of this is mentioned, and i just took it for granted... the statue hadn't had the batteries changed in 2 years and were leaking (i had to clean it up), luckily no physical damage. The art book cover is slightly damaged. At least the backpack is minty as well as the actual steelbook.
Have i been shafted in this deal? how much would this "incomplete" CE really be worth to a not-so-serious-but-pedantic collector?
PS: is the PS3 steelbook smaller in size to the X360 steelbook?