Twenty thousand dollars for a week's work is not a bad effort - but it took a whole new level of pain for Olympic golden girl Libby Lenton to earn the last slice of it.

The 19-year-old's dream of saving enough money for the deposit on an investment property moved a lot closer after winning $10,000 in her five victories at the World Cup meet in Melbourne this weekend.

Lenton added the weekend's winnings to her $10,000 pick-up at the Skins in Sydney last Sunday.

This weekend she entered and competed in six events, won five and ended her marathon program with a 200m freestyle win which drained the last remnants of energy from the ever-smiling Queenslander.

"Two hundreds of any kind are just a whole other level of pain that you didn't realise you could reach until you do one," said Lenton, more noted for her 50m and 100m prowess.

"I'm working towards getting a loan and buying an investment property, just to keep a balanced life outside swimming.

"Swimming's not always going to be my money-earner, so I do have to think about other things in my future."

Lenton has only been back in training for three weeks after a break following her dual gold medal effort at the world shortcourse championships last month.

Her success in the 200m - both in Melbourne and as part of the silver medal winning 4x200m relay team at the world shortcourse titles - has made Lenton think about adding the event to her long course program ahead of next year's world championships.

Lenton had already won the 50m and 100m freestyle and 50m and 100m butterfly on the opening two nights of competition.

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