Working livery where I used to be (5 years ago) was £10 p/w.
Full livery (included feed -which were straights -, hay, straw, stable, bring in and feed, turn out, muck out - if horse in at night - or skipping out - if horse in during day -, use of indoor/outdoor, XC coure, SJ course, fab hacking, horse rugged etc, wounds treated.
for £25 p/w.
This was a Riding School and instruction was what brought most of the money in. There were +40 horses in total - some RS, some on Working Livery and some private owned and not used.
Owner relocated after 16 years so place shut down.
Not sure about pic - but if I was interested ,I'd be openminded and go take a look around and same as any yard, be vigilant.
Well the poor horse in the ad has a saddle that is obviously much too narrow (tipping the rider back), too long, and too far forward! Anyone liverying their horse there needs their head seeing to.