Horses start selling 12 noon I believe.
Quality is rarely good, horses generally not in good condition.
I certainly think I would give it a miss if you are after a safe sound riding horse!
Meat man buys a lot of them.
If you're having a little hairy shetland pony you can usually pick one up for next to nothing however!
No I wouldnt recommend it. I occasionally go for cheap over reach boots, but always scarper before they start selling, otherwise I would fill a lorry with sad looking hairy ponies!