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micromobility - Ebikes, scooters, longboards: Whatever floats your goat, this is micromobility
Ebikes, bicycles, scooters, skateboards, longboards, eboards, motorcycles, skates, unicycles: Whatever floats your goat, this is all things micromobility!
"Transportation using lightweight vehicles such as bicycles or scooters, especially electric ones that may be borrowed as part of a self-service rental program in which people rent vehicles for short-term use within a town or city.
micromobility is seen as a potential solution to moving people more efficiently around cities"
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It's a little sad that we need to actually say this, but:
Don't be an asshole or you will be permanently banned.
Respectful debate is totally OK, criticizing a product is fine, but being verbally abusive will not be tolerated.
Focus on discussing the idea, not attacking the person.
This entire answer is mostly conjecture, but I think you'd have to be looking for the e-scooter that has the largest battery pack in that price range. Of course, such a pack would add weight and possibly bulk to the scooter. A quick search on Amazon showed this scooter, a Segway NineBot ES4 listed for $480.
Your GoTrax has a 36V 5.2A battery pack, which works out to be 187 Wh. The ES4 has double the capacity, at 374 Wh. If the GoTrax could only muster 4 miles, then the ES4 should be double that.
But I do think there may be something wrong with your GoTrax. 187 Wh per 4 miles means an efficiency of 30 Wh/km. But scooters tend to be closer to 12 Wh/km. For reference, a class 3 ebike cruising at 45 kph (28 mph) is 48-60 Wh/km. Scooters travel so much slower, and so should be many-fold more efficient.
If we say 12 Wh/km is too optimistic for the ES4, then let's conservatively assume it does 24 Wh/km. That would still mean it could do 10 miles, which is just within your parameters.
Ya somethings wrong with your GoTrax. I'd reach out to them for warranty. Mine (same model) goes close to advertised range and I weigh 160lbs