'Fred Cain' makes a sissors type. Hay Dr sells them & ships them. Along with others. This would be the ecconomical way to go, but a sissors moves the weight farther back, so you need a heavy tractor with good 3pt. A large round bale will make a front end _very_ light.
Several other companies make a forklift style bale lifter with a mast of some type. Probably costs more.