Tony, I took on a project a year ago that I almost regret, but the short answer is "Heck yes!"
I was contacted by an estate and agreed to sell a collection of about 2,000 airliner kits through my eBay store and other avenues. Well, it looks like we'll end up with more than 2,500 kits, perhaps 1,000 books, and thousands and thousands of decal sets and postcards. (Which explains in part why I've had a total of about 10 minutes to build in the last year!)
The market for these things is tremendous! I've sold to modelers all over the globe, and the top book and kit prices have been over $200 for an individual item. Since these definitely aren't my forte, I've located some airliner and plastic model groups, and the pictures I see of models being completed portray nothing less than works of art ...
The enthusiast who left these behind was totally into detail. He actually designed several of the decal sets that have been marketed, and it's not at all unusual to open a kit for an airliner and find his notes indicating that "X" airline flew "Y" aircraft with "Z" registration number and bearing "X" color scheme from date "A" to date "B". Wow!
I'm renting 2 large storage units and have a garage full. Got so overwhelmed that I've not listed items for several weeks, and am spending time with my 12-year-old son's summer vacation, getting better organized, and building a new computer.
When I've had even a relatively small portion of the inventory listed, it's not unusual to sell 30-40 items per day.
So, yes - I’m not building them, but there sure are a lot of modelers worldwide who are!
Dennis