"There's a lot we can do on how our core retail proposition is perceived by New Zealand consumers," Macdonald said. "Range and price and convenience and trust - those are the four pillars."
Macdonald said buyer protection was a trust matter, while the courier service was one of convenience, but he was reluctant to provide any detail on future plans.
Trade Me posted a 16 per cent gain in first-half profit to $46.1m on a 9 per cent increase in revenue to $114.9m, returning to earnings growth after spending several years reinvesting funds back into the business.
Macdonald said that's put Trade Me on a much strong footing, particularly as he has a "healthy paranoia" about the threat of Amazon and Facebook and takes them "very seriously".
The need for more investment and to potentially defend against the global giants meant Trade Me's capital management was a little more conservative, and Macdonald said: "I don't think we should be making big distributions back to shareholders at this point."
Trade Me's board declared an interim dividend of 8.5 cents per share, payable on March 21 with a March 10 record date. That's up from 7.8 cents a year earlier, and equates to about 73 per cent of net profit.
The company's shares rose 1 per cent to $5.12, having gained 21 per cent over the past 12 months.