Cabinets are nothing more than MDF/Particle board boxes with face frames, a lot of the cabinet companies buy doors as opposed to making them, nothing you really cant do with a table saw in he garage. Aside from that, Masher's right, they can recover or replace the faceframe , toss on new doors and new hinges/knobs and pulls at a fraction of the cost. Just be aware of the brands/quality of the hardware they are using. I haven't been in the field for a number of years, but the quality players in the hardware world where Blume for hinges and 3/4 ext drawer slides, Accuride for full ext drawer slides, Amrock for handles and knobs and Rev-a-shelf for cabt organizers.
Between formica, wilsonart and pionite there is just about every color and pattern avail. for high pressure laminates, from marble to brushed metal (real) so countertops are cheap unless your going with a granite.
I neverbuilt cabinets but I worked for a wholesale cabt hardware co. for 13 years, so if you have any product questions let me know.