Does anyone know of kitchen cabinet contractors that are willing to take on a small job?  The problem that I am facing is that there appears to be leakage at one side of the sink which I wasn't aware of. 

Throughout the years the water has seeped into the wooden cabinet wall below. So far I see only one side is affected and it is now very wet and slowly breaking.  I approached one contractor and he quoted me 2-3k to replace the cabinet below the sink only. This feels a bit pricey to me.  He said that have to remove the entire piece of counter top and they will have to do it carefully so as to not break it hence costlier.  It doesn't really make sense to me how this affects the pricing as surely the workers will have to do their work carefully in the first place.

I am no longer able to contact the original cabinet contractor company hence looking for a couple more contractors to quote but many are not willing to take on "small" job.