Hi there,
I got a really good one for about ??14 from ebay. It arrived really quickly and is the perfect size for me.
Here is the link:
http://cgi.ebay.co.uk/65cm-ANTIBURST-BIRTH-MATERNITY-LABOUR-BIRTHING-BALL-UK_W0QQitemZ200303355754QQcmdZViewItemQQptZUK_Baby_Maternity_Pregnancy_MJ?hash=item2ea302a76a
Lx
32+6