Haha, it may sound like bargaining with a sub, but in the end you may find out that I was doing it to teach you to never try to bargain with me again. *evil grin!* I can easily do things to stretch what you are agreeing to a bit. For example, you're trading a month in chastity? Ok. *blindfolds you, then inserts a self stick velcro square into the end of the cage, just above the head, then locks the cage on your dick*  "Ok boy, your month of chastity that you traded to get out of the knob polishing...starts now. Oh, and since you like getting that dick hard and getting off so much, I'll be sending you a porn video each night for you to watch. Then you'll call me and give me a detailed summary of what you just watched, as if it's all happening to you as the sub. If I feel you paid attention and watched every detail, then you're done for that night. If not, you'll report to me the next day to have that knob polished, until you can learn to pay attention to your porn videos regardless of whether I have you locked in chastity or not."