Hello Tucker,
Thank you for your question about using 2 ID's. Each eBay ID has to have its own corresponding BidSlammer ID.
Subscriptions can't be transferred, but you can cancel and apply the remainder time period to a different ID. The problem here, though, is that you would lose the lower price of the existing subscription (it was a coupon offer).
I hope this has been resolved to your satisfaction. If you have additional questions, please don't hesitate to ask.
bidslammer