Wattmeter

I am going to have a new conversion for my bike.
I am planning to add a wattage meter. I remember there were cycle analyst and battmeter long time ago. I am not sure if those are still the meter of choice. However, I am looking for a cheaper solution. I just need to see the consumed Ah and reset it each time after I charge.
What would be the best option and cheapest option out there now?
I see there are some dc hall sensing DC VA sensing meter now. Anyone has experience with those?

An RC Watt Meter off of eBay is the cheapest. I wouldn't run high amperage through it though. If you are running 30 amps or higher, I would get one with a shunt and run your current through a shunt. As for a Cycle Analyst, it is still the gold standard.

I used one of these before switching over to the cycle analyst. It retained the watt hours until reset, where some meters reset themselves when they are powered off.

https://www.ebay.com/itm/DC-6-5-100V-20-50-100A-LCD-Digital-Combo-Panel-Display-Volt-Amp-Power-Watt-Meter/122029089742?_trkparms=ispr%3D1&hash=item1c698023ce:g:iroAAOSwXeJXdeUq&amdata=enc%3AAQAFAAACYBaobrjLl8XobRIiIML1V4Imu%252Fn%252BzU5L90Z278x5ickkp2NA0WuhQytmt4dbStg00AA%252Fob1fZ3XvDsWDkdNazy474mdmeq2UmM1fF0GzrtszMJUM9HcEZZLaNevccFn6ulLYegtRZOKrFV%252B9nZsU67zuLL%252BB%252BVdxhF9HNcLzf70jmaH1oZ50NSeuye2LHif1qbLdU8nOEiGBKUzUamQoImZWCaii2AT0voGw6brRR%252B6PrdLcbzfbIRzFKZwCPoVhJqYw46w4jqTjG%252B3%252F1WW6j5hOxYgeDrqzu%252B3p359R53tFnZUlPUCtaWvn1flLSWhg2vEgA7tzz4eQ6zDOJgcriRPVoH50%252FoUAjZ%252BKgSizBIYok4nMYUDGprHfMTF8Ry8%252BS3vV8uPeRA%252BVhpx5eDoopNtNquvBv8GIGLAPJoatlfM19TpC3mV7LlabpZYTlHi2q1zIn89aCz8z04JZ9RqVz1kRsoyJvoTLUtCDqtrHc1qHrrG2nASNfTaf8SZxazDvdL1evJR82tToXPAsMR%252Bd4J2Zs6WHOaH3Js5cmFnJKgbdgf9ju79YOXv%252BQhaRuKYCDzXGAr7KoaXpOZEGApZg1qWgHQAO4LAJ98LVhQBghQtFWhFc26oAVkLfP4CHbdRDOPp97%252FWlxl1RK5pYYE64g%252BQy4m6NHcD1c7oXk%252FxvMlhJD3D%252B%252BXR3BPkADwHvNOYnLRATuijoOAUbJz0u%252FTiM4uUm3A2xuNkXs2XpTRzT5wbc8%252BsjG0ioVjK%252FSXkXg46r5Re1Pvw2kAlzxDQxxqZPCyMRWpVmwyyTwbajni4LEVuV%7Ccksum%3A1220290897422982ad07762c42369a42e53d1c8b4d01%7Campid%3APL_CLK%7Cclp%3A2334524

You really need one on your charging station, if you want to keep it simple. I never had any use for one on the bike.