Background of horse:
He is a newly turned 4, 15.2 chestnut gelding. Registered appendix. Great grandson of Storm Cat (son of Giant's Causeway) and grandson of Frenchman's guy on dam's side. Has a personality of gold. Does not get "hot". Has consistently jumped up to 3'9. Shown up to Novice level in eventing. Placed 2nd at his latest event in May.
Due to his young age and his work history, I was hesitant about him at first. Due to the fact that his owner has 2 horses and can only financially support one, she was a very motivated seller. She offered him to me for $1,000. I gave her a $300 deposit, signed a "trial" contract and brought him to my barn for a PPE, etc.
Xrays of all legs were clean. Flexed a grade 0 after undergoing all flexion tests at the vet school. My vet was VERY thorough, and assured me the flexion tests and xrays showed no problems with legs, tendons, joints, etc.
Now his issue, severe white line the owner was unaware he had. I am facing 2-6 months rest on his behalf, which in all honestly my vet was recommending he get a few months off anyways if I bought him due to the fact he is still very obviously growing.
I honestly like this horse, and because I already have him at my barn I feel like it gives me an "advantage" when negotiating his final for sale price in light of this recent issue. When I contacted the owner with the news he had WLD, she asked me the severity and then told me if I was willing to deal with the issue his final price was negotiable. I told her I would wait until my appointment with my vet and farrier (6 pm tomorrow) before I called her with an offer.
Now my dilemma. I know I will NOT pay even $1,000 for a horse I cannot ride after buying, and who I immediately need to sink more money into. I do feel like he is worth the investment of time and money however for care as he has AMAZING potential as an eventing prospect. He is one I believe could go far.
I am wanting to offer her $500-$600 and ask that she throw in his boots and leather halter that came on trial with him. She also sent along his bridle with french link snaffle because she insisted he be rode in only that while on trial. I am willing to send bridle and bit back to her however. Honestly, I would send all of his equipment back to her if she desires, but I would probably only pay $400-$500 in that case.
Is that a reasonable offer? Or am I a horrible human being? I don't want to take advantage of the seller just because there is something wrong with him, but at the same time I do not want to pay a large amount for a horse with this issue. Thanks for the input. Interested in all opinions.