I use inline checkout. And in inline checkout data can be sent using the browser or through js like in the 2checkout demo (http://2checkout.com/demo). I was actually able to buy the Acme Subscription at 2checkout demo which is priced at $9.99 for $1.00. Here is what I did:
I edited line 402 of cart.js to set li_#_price to "1.00". ANd that's it, I was able to buy the Acme subscription for $1.00. See the attached screenshots:
Is there any fix for this?