Thailand, Australia, the Chinese city of Hangzhou, Vietnam's Danang and Shaanxi province's Xi'an are among the favorite foreign and domestic destinations for customized trips by Beijingers who book through China's largest online travel agency, Ctrip. [Photo/China Daily]

The most expensive customized Ctrip itinerary to date was 420,000 yuan ($60,000).

Ctrip also offers tailored trips for as little as 209 yuan for two days in Sichuan province's Dujiangyan.

"These tours aren't necessarily expensive," says Lei Tao, co-founder of Beijing-based UniqueWay Inc, which customizes overseas tours.

The idea is to get as close to customers' expectations as possible under their budget.

His company's business growth doubled in March.

Its most popular destinations are Europe, North America, Australia and New Zealand.