We got our solid walnut floor from a co. in Castleblayney, Co. Monaghan (Irwins), we searched everywhere and they were the cheapest with the largest stock, tel 042 9740278. I would have to admit their customer service level is very bad, they pass on 3% to the customer on credit card transactions and aren't overly helpful, they also never have any sales saying they're stock is always the lowest available price. But anytime we thought we found cheaper wood, when we checked the spec., they offered a better price. eg. we found a Kumaru for €46 which was "premium grade", but when comparing it with Irwin's commercial grade for €36, they offered a better product. They do tons of oak options, when going for semi solid, watch out for the depth of the semi-solid. I can't remember what the options were but I think it was 2mm, 4mm and 6mm. The 2mm wouldn't last one sanding, you'd really need the 6 mm for more than 1 sanding