Need budget replacement for broken kit lens - am I missing something?

As other stated, another 18-55 lens is probably your most sensible choice. Otherwise you really need to up the budget at about $600 for an upgrade.

If you are willing to give up zoom, the 35mm 1.8 is also a budget lens that is better for low light shooting, and has considerably faster focus than the 18-55. However I would not choose it as an only lens.