Try HYTHERM on the Kells road out of Navan, opposite the FORD garage, I got 2 big bags of beans there for €10 two years ago, just give them a ring before you go, they are an insulation company and they sell the waste beans in bags to people for beanbags.
Hytherm (Ireland) Limited
Liscarton Industrial Estate
Kells Road
Co Meath
Telephone 046 9066000
www.hytherm.com
hths!!!