Since the cost is your main issue: you don't need LLC. You can register a name as DBA, no hassle, no fees. The most common reason people give for LLC is that i

Since the cost is your main issue: you don't need LLC. You can register a name as DBA, no hassle, no fees. The most common reason people give for LLC is that it shields you from personal liability so that if you get sued, it's your company that goes bankrupt, not you. Personally I consider that a scare tactic as in: I've yet have to read a single story of a small software business where that actually happened.