Yes you can do it yourselves. You can't fix a broken gauge, but you buy those, as said, and you can do all the rest. From what I see, you have good graphics on the glass and keep in mind it is all available by piece. The gauges, the glass, the glass decals, the gauge faces, needles.........the rest is a gentle disassembly, careful cleaning, some spray painting and reassemble. A fun job and WAY cheaper than sending out. That is all they are going to do.
Here are the pieces/parts. You have two electrical gauges and two mechanical gauges. usually the mechanical will be OK, may just need a new tube kit. The electrical gauges may be OK also. The gas gauge can be tested using the fuel sender on the bench. The ammeter can be tested also.
