We have a foundered mare that is doing great right now, but it has taken 2 years to get her where she is. One of her problems was us really, we did not know she had foundered before, seller didn't mention, and we had her out on spring grass, plus a rich food. After we found out, we had a blood test run, and she was low on her thyroid. After putting her on a drylot, mostly a hay diet (she gets 1 kitchen cup of plain oats while every one else is eating so she doesn't feel left out) and we put her on Thyroid L. I am not saying you should give anything but the above mentioned advice about a vet check would be the way to go if you are serously considering this horse. With a foundered horse you are looking at a horse that will require constant daily attention, and more costs in vet bills at times. Personally I would not knowingly buy a foundered horse, but I am not selling one because of it either :bgrin I had no idea what I was getting into, just listen and know up front what you will be getting so you can step up to the plate without regrets when needed for this horse if you should buy it.