If you don't get 2 confirmations after 2 hours, then something is wrong is your transaction. You will lose your slot and someone else can grab the bomb.
If the transaction never confirms, you haven't spent the coins.
If it does confirm eventually, then email us for a refund.
Regarding the prices. Each bomb starts low. The timer starts high, and ticks down.
There are 2 options from here :
1-If someone grabs the bomb, the price goes up, and the timer resets to high.
2-If the timer runs down, the price goes down to the start price, and the timer resets.
Group bombs work the same, but multiple people can grab and share the price between them. Check out the Faq at the bottom of the site for a bit more of an explanation.
Any questions, we're here, or PM / email us.