My cello bow cost £30 in about 1968. A local bowmaker rehaired it recently and said it was probably worth £600-800 now.

One advantage of carbon fibre is that once you've found a type you like, a replacement, should it get broken, lost or stolen, will perform identically.

As a learner, get a cheapish bow. When you've been playing for long enough to appreciate the difference* between bows, upgrade if you wish and keep the original as a spare.

*it mostly shows up in rapid string-crossing passages where the weight distribution and springiness of the bow will give you the right amount of controllable bounce.