@dapeters … saying a 3d printer will pay for itself in a year of course depends on how much terrain you want.
Some numbers: My 3d Printer cost $260 USD on sale. Not a kit (but slight assembly). A roll of filament cost about $20 USD-24. You can get it on sale for $17 USD and you can pay more (like $28 USD-30 on up). But figure $20 USD for a standard roll.
You can probably print out 5 "standard" houses for that one roll. By standard I am talking about a 2-story with roof building of a typical Normandy home or shop scaled for 280-0mm minis.
Call it $4 USD per building. Maybe I am a little off, so call it $5 USD per building. Buying one of those in resin is probably 3 times that much.
Say you want a 4x6 table top of a village in France, so the allies and axis powers have something to fight over. Figure 10 buildings, some walls, a town square with a fountain, some cobblestone roads, etc. Could probably print that out with three rolls, so $60 USD total. Buying that as resin terrain is probably $200. USD
So the 3D printer just saved you $140 USD for that one project. If you have two such projects, you just saved the cost of the 3D printer.
A side aspect, you bought those "files" from a kickstarter. You start to game in 28mm but come upon a club and they all game in 15mm. They have no terrain though. You can scale your files and start printing in 15mm. You think the originals are a little on the small side, so you scale them and print at 18mm. You tinker uuntil you get the "right" size for you.
No waiting untilt he manufacturer who makes great 28mm buildings starts a 15mm line. You have ht files, they can be any scale you want them to be.
And you can print as many as you like.
Right now, in my opinion, 3D printing is terrific for terrain. Not su much the actual troops themselves, although things are improving. But buildings, walls, streets, etc. They look great, are low cost, are light weight, are hard to break, and can be printed whenever you want.
And the files are usually quite detailed. As printing technology improves, those same files can be used to print even better looking replacements in the future, if you are so inclined.
If you have a couple of foam hills, and a few trees, and you have enough terrain, then a 3D printer is not going to pay for itself. It becomes just another hobby expense. But if you like having lots of nice terrain, and like the idea of printing your own, then it will pay for itself.