Add Multiple prices for a product

[dkundu]

Hi,
I need a developer who can help me to add multiple prices for a product which is under default shopper group.

Example: Base price is UK 100 pounds. When a customer choose different currency such as US and click on change currency then VM should pickup UK 90 pounds which is set for US customer and change the price based on current conversion rate. If price set to -1 then product can't be sold in US. If anybody can help me, please contact me with price. Thanks.