In case any Pentax SG Webstore staff are here, please take note as it would be a shame for a site offering decent prices to be reported on:
You may note from the IRAS website
IRAS: Displaying prices , that GST registered businesses have to display their prices as GST-inclusive.
This means, $XXX (exclusive of GST) is NOT allowed and is against the law.
From the above link:
If two prices (i.e. both GST-inclusive and GST-exclusive price) are displayed, the GST-inclusive price must be prominently displayed.
Quoting the following clauses but not the GST-inclusive prices is not acceptable:
"Prices stated are subject to GST"
"Prices stated are exclusive of GST"
"Prices stated are before GST"
You may be fined up to $5,000 for flouting this rule.
Please reflect the prices on your website immediately, before a whistleblower reports on you.