I bought mine in Limerick from Steeltech. They have little offices all over the country to my knowledge. Their head office is in Westmeath. Thats where its being delivered from. There 10ft by 10ft would be nothing like that. I paid €675 for an 8ft x 6ft with windows, roof felt and interior felt and the 12 blocks to rest it on.
Here a link to their website
[broken link removed]