Personally the ties on both of those sweaters as well as the tail on the 3rd one would just drive me crazy but if you like it go for it but I think that they will look dated sooner then later.
i got almost the exact same sweater from wetseal for $15. it's more fuschia than pink, but it's the exact same style in a cotton jersey material. imo it's worth checking your local mall, unless you really want a cashmere one.
Do you have a Stein Mart near you? I saw a lot there in really pretty colors and nice fabrics for under $30. I really like it in luck too with the fool proof outfit.