I don’t think there is an off the shelf solution because there never really was. There might be more choice of solutions these days, but they all involve a degree of DIY and adaptation.
The Maslow can work without a Z-axis motor, so you could bolt any router to the sled and adjust the Z-height by hand for every cut (the software will pause and tell you to alter the Z-height), but that gets old really quickly. So, you need a motorised Z-axis.
We used the popular Bosch router hack, which is well documented here and works well. It is a little daunting, and takes time to get the parts together, but it can be done. Ours was a group effort, so we were lucky to have people with different skills to attempt every part of the build. If you’re worried you might stuff it up maybe you can find someone nearby to help. Where are you? We are near Christchurch.
I took a look at the Ozito router in Bunnings. It seemed that it could be modified more easily because there is a threaded boss on the outside of the frame, so everything is visible and accessible, but the router itself is probably not good for long-term use.
Other people are bolting motors to extruded beams, i.e. not buying a router at all, just a motor and a collet. Lots of ideas on this forum.
If you don’t want to hack things then you might find the whole Maslow experience a little off-putting. It’s not a product, like a TV or a toaster. It’s a machine which you have to build. Having said that, once you get it going it’s a cool thing.