I bought the SV-08 refurb, expecting a repaired return or a lightly used review unit. What a got was a printer which was "rode hard and out away wet". It was easily the filthiest and dinged-up anything "refurbished" I have ever purchased.
One of the motor holders in an upright was missing a screw, and no, it didn't fall out in the box. Luckily, I had a screw from an old joystick that fit. Maybe a little long, but it doesn't interfere with anything. A screw is also missing from the bottom control area cover, which I don't have a replacement for.
The belts for the XY carriage have so much use that the edges show multiple large wear spots. The build plate has a large spot at the rear edge where the coating is degraded and lifted. There are multiple "dings" on the plastics and extrusions. The heated bed below the build plate looked like something had been spilled on the unit and dried there, and there are a couple small dings on the heat bed coating. It also looks like someone had put tape or a label over the SOVOL name at the front at some point, and the residual adhesive collected unremovable grime, so even the company name is ugly looking. There was also a nice layer of filth on the control screen. The nozzle on the machine also looked somewhat "cooked", but it works. Even the box it came in, was barely holding itself together. It feels like the machine I was sent is a "frankenstein" of parts some of which which no-one cared about and were kicking around a shop.
After much cleaning and finding a replacement screw, the machine seems to function well, but given the condition of the XY belts, I can't say for how long. I am quite disappointed in the condition of the unit and the effort required to make it somewhat acceptable. So if you are considering a refurbished unit, understand that SOVOLs idea of "refurbished" might mean a unit used heavily for production until it broke and then repaired and sold with the least cost and amount of effort possible to do so.