Buyer should be able to increase his own bidding value but system should not take it as the highest value until another user raise the bid
As a ...
Buyer,
I want to ...
keep bidding and increase the bid value but the Item value should not increase until another user started bidding
So that ...
buyer can keep extra precaution
I know I'm done when ...
I become the highest bidder and increase the bid value without updating it in the UI.