Where is the best place to buy a used Trailer Dolly?

We’ll I made my choice & bought this one used with a year warranty from the factory the refurbished it.

The new ones comes with solid tires & ghats what I ordered..
https://www.trailervalet.com/shop/trailer-valet-xl/

Nice thing about this one is it’s small & light enough to move & even take with you Camping in case you need one to finesse a parking spot.

But it’s basically just gonna help me park it at home due to my tight turn I need to make..