He was dubbed the "eBay millionaire" after he claimed he had made a fortune buying and selling items online.
Benjamin Marc Wee Tshung Mun also used to conduct workshops and, in 2009, even appeared on a Channel News Asia talk show in a segment on successful Internet entrepreneurs.
Wee, 40,who used to run an Internet commerce company known as WTF, was jailed five months yesterday after pleading guilty to one count of cheating last month.
An additional charge of criminal breach of trust involving $8,500 was tendered against Wee on Thursday.
He was accused of misappropriating the money entrusted to him by a man known as Wandy, between May and July 2009.
This charge was taken into consideration during sentencing.