I've been looking at wooden playhouses a lot recently. This was £590 in the last day or two, including a £60 voucher currently running until 1st July. (£60 off when spending £500 or more on garden sheds). Full price normally £650.
Today the price has dropped to £455, then there is an additional £25 off voucher reducing to £430. (£25 off when spending £250 or more on garden sheds)
No other retailer I've found comes close to this price, I was also looking at Sainsbury's for around £595 but that offer expires today (15% off RRP)
So basically this is an 8 ft by 6ft wooden playhouse, with internal mezzanine, and external 2ft deep verandah, so overall footprint is 8ft by 8ft.