Looking at a cube Hyde race and Canyon Commuter 6 as examples.
They are a bit pricey but may be second hand is doable.
Any other alternatives that will be low maintenance for canal towpath/cycleways in all weathers. Needs mudguard and rack mounting points.
I wanted to go belt drive for my commuter for the same reason. Finally i couldn’t find what I wanted for my budget so went with a classic chain drive. Yes i oil it, yes i clean it and yes I’ll have more parts to replace but that does give me an interest in the bike and makes me keep on top of it’s overall maintenance.
I oil the chain every week, once a month or so i fully clean the drive train and bike and i reckon I’ll get around 8-10km out of a chain based on what I’ve done so far. My bike is used 365 so in all conditions but on the road.
Something like this from Tredz/Halfords
Getting a testride could be a challenge tho. Might find one to sit on