Tender documents show Investec Bank (Australia) was hired on August 30 to gauge buyer interest in the then state-owned betting agency, and was eventually paid 1.8 per cent of the $103 million asset sale price.

The six-month contract was for finding and liaising with potential buyers, evaluating offers, due diligence work and financial advice.

A government spokeswoman said it was satisfied with the amount of money paid to the consultants ``who were able to successfully achieve a very good sale price''.

The sale, which was finalised on March 26, drew criticism after valuations estimated that the asset was worth $130-170 million.

Opposition finance spokesman Peter Gutwein said taxpayers should be unhappy that consultants were paid that much to handle what he described as a dud deal.

``The Tasmanian community and taxpayer received less for the Tote than what experts suggested it was worth and I think the only people who will be happy about this deal will be the consultants,'' Mr Gutwein said.

Auditor-General Mike Blake confirmed that he had begun reviewing the sale process, including the money paid to Investec, to ensure a fair and reasonable price was reached.

His audit is expected to be completed by July 24.

A parliamentary committee, which was set up before the sale to investigate the role and future viability of Tote, is also scrutinising the process.

In an interim report a majority of that committee's members advised against a sale, but a move from the Liberals to block the sale in Parliament failed.