What is the value of these vinyl records?

I just wanna know the values of these vinyls:

Queen - Sheetkeeckers(Recorded live in concert)
TAKRL 1957
Released: 1975
EX-/VG+

Queen - A Night At The Opera(Radio Station Copy)
Elektra
7E-1053-A
Released 1975
EX-/EX-

Roger Taylor - Happiness(Limited green colored 7'inch vinyl)
My copy is NO. 6252
Parlophone
Released 1994
EX/EX
(How many copies was actually made?)

and again:

http://www.popsike.com/php/quicksearch.php?searchtext=queen&x=0&y=0

regards
W.