How much would it cost to change an aircon fan blower?

My car has recently started making an really annoying rattling noise coming from the far right fan. (left in america)
The aircon itself is ice cold and i have no issues with it besides this, they've lubed the fan itself but they said if it doesn't stop i'll have to get it replaced. I just wondered if anyone had a rough estimate of price?
The car is a 2005 Honda Jazz.

"Far right" is "left in america"? What the he11 does that mean? BTW: it's America, douche.

Are the fan motor brackets all secured? Is there any damage to the plastic fan blades? Does the fan blade wobble when running?
replace the motor and fan blade if everything check out ok.

Blowers get noisy as the wear out. The only remedy it replacement. You might find a good used one at a salvage yard, an aftermarket replacement or OEM. Choose what fits your budget. The work will be charged for the time the job takes.