Jurassic Park CD single with poster

I have a mint condition copy of the Jurassic Park CD Single, complete with
promotional poster, from England. I bought it myself in London when I
lived there around 13 years ago. A few other private collectors have offered me
as much as $75 for it, but I wondered if it was worth more. Can anyone help please? Thanks so much.

suggett, December 20, 2007; 11:00 AM