There's another picture and the caption reads "Oso Glamorous by Totilas X Ivoor" ... a little bit of googling produced the mare's page ... pretty lacking in pedigree information. Says the foal has been sold to Europe
Meh some people in this world have so much money that they can "play" with what ever they like. Maybe to these people Toto's stud fee is not a pocket book stretcher and honestly in the grand skeme of things it's not. Many top winning AQHA reinering stallions, halter and please have fees MUCH higher than Toto's. The stud fees in the Hunter Jumper and Dressage world are "moderate" (even Totilas) compaired to the fees often found in the Western world. The mare owners may have thought it would make a good cross for what ever reason and wrote a check to the breeder, the vet, stable ect ect and may well have never blinked an eye at the cost. Maybe this mare despite being "humble" has produced some stellar babies in the past, who knows. But what I can tell you is that many of people chosing to breed to him have pockets so deep that breeding to get a "fashionable" Toto is an expensive hobby =p
Well our Wonderful H R H queen Elizabeth bred the Stallion Mars in the dams pedigree and he stood wth a fiend of mine Mo timmis at Badgers wood stood in East sussex England he died a couple of years ago now. I don not know anything about Pluto.