There isnt really a commercial application that would pay for small footprint benders- it costs virtually the same amount to build a bender that can bend a ten foot piece as one that will only bend 24"- so no manufacturer that I am aware of would sacrifice capacity and flexibility for small scale. The garage market is pretty small.
There are some relatively small CNC rolls, but of course they are only capable of doing pretty large radius bends, like these from Carell- The BA20 is in the size range and capacity you are talking about.
BA CNC Series | Carell Corporation | United States
I own a bigger roll bender from the Italian manufacturer that makes these- good quality for the money.
In terms of mandrel bending, though, they are all pretty big, physically.
There are small benders like these ercolinas- but they are not mandrel benders, so are not suitable for thin wall materials.
Ercolina SB48-TC Super Bender Tube Bending Machine | CML USA, Inc.
The japanese do make some amazing cnc benders, but they are very expensive, and have no distribution to speak of in the USA. And, again, for flexibility reasons, they are long.
CNCフリーフォームパイプベンダー | 日進精機
Tauring, an Italian company, was making an amazing CNC bender called the Slalom, which wasnt too huge, and could do compound bending in tubing.But I am not sure if they are still in business.
Slalom 60 CNC 8 Roll, Tauring Roll Bender Successful Test Bends at Customers Facility - August 2016 - YouTube
