Price displays different to what is actually Entered

[zues]

Price displays different to what is actually entered.

for example

I add new product.

Enter new price of £1.00 so click preview and price shows up as £0.82

of if I add new price of £1.20 - product display price is £0.98


Can some one be so kind and point out how to correct this issue.

regards

Zues

[learoypc]

preview is ex any taxes