http://www.amazon.co.uk/exec/obidos/search-handle-form/026-1005069-3397256
Searching around i came across the original (well 1997 re-release) of the original trilogy boxset, this was the gold box set with Darth Vader cover, above is a link to the page where the above information can be found.
As for VenganceGods enquiry there is also single edtions of A New Hope and Return of the Jedi below are the respective links:
http://www.amazon.co.uk/exec/obidos/search-handle-form/026-1005069-3397256
http://www.amazon.co.uk/exec/obidos/search-handle-url/ix=vhs-uk&rank=%2Bavail-sales-rank& amp;fqp=format%01vhs%7Ctheatrical%02keywords%01Sta
r%20Wars&sz=10&pg=2/026-1005069-3397256
Hope that is of some help, good luck in your search.