different price for buying volume?

[icdesign]

Hello

I can't quite work out how to add a discount for buying volume. for example

poster price £10
buy 4 get one free

so i want to add a rule just to posters that once the volume of 5 has been added it takes the cost of one away?

is that possible?

[John2400]

I think that can be done in Products>>custom Fields >> Say you develop a Varient that says choose your order - and choices drop down box or choices are 1 for $10.00, 2 for $18.00 3 for $21.00 AND SO on.
iN vm1 WE USED  MINUS AND plus signs to chnge prices too.

Or add - % discount on certain products in taxes and calculations on a category -

[jenkinhill]

There will be a plugin for this;  http://forum.virtuemart.net/index.php?topic=94522.msg314268#msg314268