Hi Caroline,
have you looked at
www.fabricguild.co.uk I have been in person and also ordered by phone and online and they have some great deals. They also sell wadding at a reasonable price and although not quite as good quality as warm and natural it is half the price.
I am presuming that Elmer's school glue is just pva (washable) and we get that I am going to be brave and try to glue baste a quilt sandwich with washable pritt pva (fingers crossed)
Eileen