Sorry Horation, the boots are worth this amount since there is a lot more supply of them. The sandals drop a lot less (making them rarer and thus more valuable). Added to that the crazy (yet lovable) players who even care about these items are not interested in boots nearly as much as they are interested in the sandals and dye masks so you won't get anywhere over maybe a 50-200k for this item (depending on how badly they want to complete an outfit) Feel free to keep your post at 3million, but you probably won't find anybody to bite at that price.
Landarr's got a post at SB 5 mill b/o 10 mill so I guess it's worth what people want to pay for it. It's not like this colours ever coming back.
Haha, I don't think Jupiter was mean about it. Also... your post was long gone, I wouldn't have even seen it if Horatio hadn't said something =p
There seem to be 35 pairs of purple so far: http://www.uorenaissance.com/itemdetails/Boots/170C/300/2
