Where is the Victron for $130? My Trimetric was around $200 by the time I paid shipping and duties and for the cable it needs to the shunt. You can get PWM controllers with V and A display for well under $100.
Of course you then can't even see the stupid display because you mounted the controller up by the batteries where it belongs, which is unfortunately out of sight in many (most) rigs
.
So if you don't have a voltmeter you watch anyway like the OP has, maybe for another kazzilion bucks you can get a remote display for the controller--if you pay extra for the fancier controller that takes a remote--- They do want your money, so why fight it? :)