Casting Plaster

Hi Folks,

I was not sure where to post this but said to myself I would chance it here.

One of my hobbies is casting Miniature Bricks from gypsum based plasters
and making model castles/buildings etc.

I'm trying to source 25KG bags of Casting Plaster where I dont need to order in bulk. Plaster of Paris is too delicate and not suitable. In the past I've managed to source "Dental Plaster" from my Local Building Supplier "Brooks" in Limerick.

But I'm looking for something stronger!!! anyplace I've asked will only order in bulk of 80 Plus bags which is no good to me since 3-4 bags would last me 6 months for my hobby.

Anyone know anyplace in the Limerick Area or someplace that would deliver a few bags of plaster like any of the below:

http://www.cfsnet.co.uk/acatalog/CFS_Catalogue__Casting_Plaster_564.html

Ordering from England or abroad is just too expensive for postage so looking
from something more local. I asked a national gypsum supplier before
but they said they would only be able to sell in pallets of 80+ bags.

~B