Newbie question : how does it work???

[epicier]

Hi there,
sorry for this really newbie question, but I have to be sure :
I want to snipe an item, starting price at $99, ending in an few hours, and no auctions till now.
What bid should I indicate : the maximum I'm ready to pay, or just the increment?
That is, if I indicate $200, will I pay $200 for sure, or will I pay less if no one else tries to bid?
I'm sure the question is stupid, sorry guys...

[epicier]

I answer to myself... thought it could be interesting for other noobs like me Of course, the "bid" field is the max amount you're ready to pay, not the price you surely will pay!