Hello James - welcome to the forum.
Gouges vary enormously in quality. The very cheap ones don't last very long because they don't hold their edge very well, and are therefore a false economy because the necessity to sharpen them frequently will rapidly convert them to filings.
For a reasonably priced, good quality gouge, I would look at Robert Sorby, available from Turners Retreat (who are owned by Robert Sorby).
For a higher priced, best qulity gouge, without paying stupid money for gimmicks you don't particularly need, I would look at Ashley Iles. They're better because they hold their edge longer, but they are more expensive than Sorby. The Sorby ones are more than acceptable though.