Over the past several years, I've ordered Scott catalogs from several different dealers. Although
Amazon was not among those I used for the Scott catalogs, I have used them in the past for book orders, so I'm pretty sure I understand what you mean about them not always being packed carefully enough to keep them from getting dinged either in the packaging process or in shipping.
The two dealers that I thought did the best job of carefully packaging the catalogs were Golden Valley (used to be Gopher Supply) and iHobb. I've also purchased from Subway, and they were just under that level of care. Ironically, I encountered the most dinged-up items when I ordered from Linn's/Scott/Amos directly. (This was on several different occasions.)
I suspect that you could call Golden Valley, iHobb, or Subway and tell them you plan to keep the volume for a long time, and ask them to pick out a copy in pristine condition and wrap it really carefully for shipping. This is just my opinion, but I suspect you'll get the most responsive consideration from Golden Valley.
I'm not affiliated with any of these companies, other than as an occasional customer.
Let us know what you end up deciding to do.