Yeah, apparently the main difference is the enclosure.
You're right that it's a good, affordable starter scope. It will give you very good readings (at least 10 samples per cycle) up through audio frequencies (< 20kHz), and reaches its upper limit at 100kHz.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.