According to the other listing, it comes with the CAN-JR, which will allow charging from a public J1772 station. You would need to get the CAN-SR in order to use your UMC for charging. (Contact
@hcsharp for details.) But, it also seems to include a Roadster charger, so perhaps you could use that instead, depending on your home's wiring.
Roadsters don't have control of charging to the fine level that the S/X/3 do. A Standard charge takes you to about 83%. A Range charge (not recommended for frequent use) goes to about 94%. So, your "90%" would be the 83% level, and depending on battery health, should net you about 160 to 175 miles of Ideal range. (Range charging, and driving in range mode, would put that to something over 200 miles.)
I got my Roadster about 4 years ago, and have used it as my daily driver ever since. Eminently practical in that regard, and also a lot of fun. Before I retired, I charged at work (which was free), and that easily covered a round-trip or two. That said, these are hand-built, limited production prototypes, so reliability is not necessarily its strong suit. The 1.5, however, tends to be better than the 2.x in that regard, and as long as you're not living in the jungle, it should be fine.
My only caution flag is the sales history. Seems to be about half of what they should go for, and that trips my warning flag, if indeed it could sell for that price. Why so low? It seems to have been sold and resold many times recently. Why?