Hello Frank,
Thank you for your question about your subscription. The upgrade comes with many features. I'm glad you asked since we need a help page for this.
Here's the list of how the Premium differs from the free plan.
1. One-second lead time setting (instead of 10 seconds)
2. 100% accuracy guaranteed (instead of 99.5%)
3. Bids placed from 3 geographically optimized locations (instead of 1).
4. Bid Groups - win one item and shut off other bids in a group.
5. Outbid notices - only we can send these. eBay doesn't know of your bid, so you can use ours.
6. SMS Alerts - get outbid alerts to your phone and interact with BidSlammer to change the bid by replying to the message.
7. BidSlammer API Access - if you want to manage your bids programmatically.
I hope I answered your question to your satisfaction. Please let me know if I can help further.
bidslammer