Nice score! They are truly the best pizza cooker in their price range, especially with the capacity to make up to a 15 inch pie.
I've had mine since 2013, and it's still going strong. Since they don't make them anymore, parts are impossible to come by, so take good care of it and it should last quite a while. Definitely get a cover for it, which will keep the rust out. The motor is cheaply made, and is best powered by electrical current using the AC adaptor, vs batteries. I eventually replaced mine with a much stronger rotisserie motor and it runs like a champ.
A few essentials you might consider:
1. Get a good infrared thermometer so you can check the stone temp. I typically use a stone temp of 625ish for regular flour, and 750+ for 00 flour.
2. I turn off the motor briefly when launching and removing my pizzas. Trust me, it's safer that way!
3. Get yourself a good wooden peel, or better yet, a Super Peel which will take a lot of the hassle out of getting pizzas in this or any other oven, for that matter.
If you like pizza as much as I do, this will be a real game changer of a cooker!