Onza T-pro get one off ebay pretty cheap, decent bike lots of people start out on them. or if you want cheaper still onza rip I started out on one, they do the job I started out on one, only thing is they have v brakes and not HS33.
If you buy new you'd be lucky to get a third of the original price if you sell, and for the same price you could get a second hand bike of a much higher spec.