Seems daft to ask, but when you have several and not all have much value + all the accoutrements of saddlery, yard stuff etc etc It is not as easy as it would seem... Not helped by current economic situation I may add.
Horse market a bit slower here in Aus as well, took me ages to find the right owner for the pony we sold, but we did. I packaged the horse with it's rugs and bridle etc and I think that helped make it look a more attractive package, plus got rid of some stuff.
Then I advertised in the most popular magazine every one who is looking for a horse buys.
You could donate some things to local charities Or you could pack the stuff up and store it in your attic for a few months incase you feel differently later on.