I'm a newbie, but from my recent install....
I picked up a very good condition 32amp Eaton unit on craigslist for $350. I put a plug on it and installed the 220V outlet myself for approximately $100 in materials (bulk of that was 8 awg wire for a 35' run), receptacle, plug, and 40 amp breaker. So, about $450 all in. It charges at up to 7.2Kw, which is more than adequate for the Leaf.
BTW...the Eaton unit actually comes with a wall-mounted cord management system, and the head is mounted from the side at a slight angle, rather than perpendicular to the unit. Works great.
Here's my advice.....be sure your electrical panel can accept an additional 50 amp breaker (space in the panel box w/o having to add a sub-panel) and the corresponding load. I had an electrician inspect my panel box and he felt comfortable that adding a 40 amp breaker was not going to overtax the service (150amp for my house), especially since the vehicle is charging at night, when most other appliances are not in use. I have a heat pump that will be running nearly 24/7 during the summer months, but that's about it. If you are comfortable with all of that, then great. Along the same lines, though, you don't want to buy a charger that requires you to upgrade your electrical service (e.g. from 150 amp service to 200 amp service). That is a very expensive proposition, especially so here in Georgia, as a service upgrade requires a permit and is inspected as if it were new service. This means the house has to be brought up to current code and can cost thousands, not hundreds. For example, the wire from the meter to your panel box will need to be replaced, the panel itself might have to be replaced or a sub-panel added, and at least in this location, hard-wired fire alarms have to be present in all bedrooms and several other areas. I currently have 2 on each floor, which I consider adequate, but it does not meet the current code.
Point is, if I would have been told by the electrician that my Level 2 unit required a service upgrade, I would have opted for a much less powerful unit, just to avoid the cost of the service upgrade.
Hopefully, none of this will be a problem for you and you can put in whatever type of unit you want. I'm just advising you to make sure you don't buy a unit that requires a huge expenditure to install it, thus negating the benefit of the great deal on the car itself.....
Good luck with it!!!