What is the price range of a cello?
Depends on how nice they are. If you get a full size super nice one, it can be in the three thousands or more. I got my full size for about 400$. It's got a lot of cracks and chips, though. If the cello is brand new and really nice, it can be pretty expensive. VERY expensive.
A cello has a rich, beautiful sound an excellent range of notes; and not assuming, but cello players seem more of the strong, friendlier people, while violins: high, probably more solos, and the violin players seem cockier and competitive. Depends on what you want. By the way, cello players tend to get more callouses because of the thickness of the strings.
The cello is a much bigger instrument with a lower range of pitches. It looks the same as the violin (if you ignore the size) but the violin and viola both have a chin rest, and the cello does not. Instead, the cello has an end-pin at the bottom that you stick into the ground. Basically, they are the same except for the chin rest and the end-pin (and the size, of course).
Well, you could... It's a question of how hard it would be. The cello book is written in bass clef, and violin reads treble clef, so that's an initial barrier unless the violinist reads the other clef. Then there's the fact that the cello is pitched one-and-a-half octaves lower, so the violinist would have to transpose up one or two octaves (depending on the range of the cello piece). The cello's strings are C-G-D-A, while…
The earliest cellos were smaller and held between the knees. They didn't have endpins and there was no ebony on them, which made them lighter. Before the Baroque period people played the viola da gamba which is quite similar to a cello in range. The original cello had 5 strings due to lack of changing position.