2025 ebike 20inch Commuter bike

2025 isinwheel u7 bought it new last August for 500 on Amazon. I rode th bike little over 1000 miles. Top speed is 20 mph. Has new brake pads rotors and calipers chain is clean and greased front tire still new back is about 100 miles on it. The horn does not work the lights work. It weighs about 60 lbs. Battery is good I can throttle about maybe 15 miles without peddling and about 20 miles peddling. It has a 1000w battery. Motor is 500 says it peaks to higher. It rides smooth and everything works. I bought a new one a few months back so I don't have time to ride two. I took good care of the bike and the battery it will surely last for years. Also has a trailer bracket mounted on the back rim. My price is 300 I think it is fair.