Having a browse of the BHS website and came across this.
Looking at other sites (amazon), it appears to be closer to the £200 mark.
Listed at over £230 on Karchers site
The picture on the site is the SC4100 model, but description says it's the SC2500
Looking at the BHS thread created by goonertillidie - there is also code WELCOME3 to take another £5 off as well as Quidco making this potentially closer to the £110 mark (after code and Quidco pay out).