Another option, should you be lucky enough to find one:
The discontinued Projector 150. With your laser printer or inkjet printer and printable overhead projector sheets, you can make your own gobo. Cheap. Cheap. Cheap. The Projector 150 is very affordable, and the sheets are pennies a page and you can make multiple gobos if you want to.
Now, let's compare the two. First off, the Gobo Projector is a MUCH more expensive unit, but it is a good unit AND, very important, is a CURRENT IN PRODUCTION model. This means it is actively supported.
The Projector 150 is a relatively speaking low-cost unit, which I bought new for a very decent price despite already being out of production/discontinued.
The Gobo Projector requires you have custom gobos made unless you have the tools and resources to make your own. This means cost, delay and possible issues if there is an error.
The projector 150, should you get one, comes with some gobos. A couple of "psychodelic" color wheel things and a "holiday" wheel. Using that holiday wheel, I scanned it at 1200dpi and then used that to make a working template to make my own gobos. Works fantastic. Using your inkjet or laser printer, you can make gobos for super cheap using 3M Transparency Sheets. Do get them specific for your printer type. One big advantage of this is that you can make gobos as you see fit, they are cost effective, and you can even go color for no real extra costs.
Do be aware that you can have glass gobos made for the Gobo Projector, so if you want color, you have to go that route. Not so with the Projector 150. Got a color inkjet and those transparency sheets? There ya go! Color is within your grasp at pennies a sheet.
I have personally run my Projector 150 all night and no problems. If you use the right materials, you don't have issues. Right tools for the right job.
Don't want rotating gobos? Fine. Disconnect the motor on the Projector 150. How is this done? Unplug a cable, it's no big deal.