Product review (5 stars): Ordering and Shipping from Amazon Worked out Well
This review is more for the shipping aspect of things than for the refrigerator itself.

Edit:  I was looking back at details on the refrigerator and see that in its current form, it is being sold by a third-party seller at a price that is a good bit higher than I paid.  My following notes about shipping apply only to my experience, which was sold by and shipped from Amazon.com.  I can't vouch for how it works out with a different seller/shipper.

I was nervous about buying something so large and expensive from Amazon, but it worked out well. It was shipped via freight, I had it delivered to my workplace where there is a loading dock, then brought it home from there.  That also allowed me to be there to check it out for any damage upon arrival...plus I'm sure you would have to be home to accept delivery anyway!  So...if you're wondering about buying such a thing from Amazon, you can order without fear.  I'm still amazed at the price, considering they included shipping for free!

I bough it to replace a 25-year old RM2500 that finally sprung a leak in the cooling unit.  Works as well or better than the original, considering the original had developed a tendency to trip the GFCI breaker when running on electric and wouldn't cool as well on gas despite doing everything possible to get it working better.

There is only one con I can make note of...even though every single note indicates the dimensions are identical to the RM2500, it is just a little bit deeper, about 1/4 to 1/2 inch.  When slid into place, if you line it up with the old holes for the rails at the back bottom, it is still sticking out into the trailer.  I ended putting strips around the outside to build it out enough to make it fit.  Then I had to work out all the sealant that was used to protect the gas line so it could slide back a little even then.  Of course that meant the gas line had to reach a little bit further, and that was a pain to stretch enough and get connected...then of course I had to protect the gas line where it came up through the floor again.  So...it was a bigger headache than expected, but it works great.  If you're replacing another RM2510, and probably even an RM2501, I wouldn't expect any problems such as I experienced.