It relates to stamp duty in UK and deprnding on purchase price you have to
pay a percentage..

£0 to £160,000 is 0%
£160,001 to £250,000 is 1%
£250,001 to £500,000 is 3%
£500,001 or over is 4%

if property price is £255,555 then 3% should be chosen, if £100,000 then 0%
is chosen.

Many thanks