While we hope to be able to offer you a Guaranteed Buy Bid on your trade(s) in the near future, we do not have that capability at this time.
However, there are still several things you can do to maximize your trade value:
1. ALWAYS have it detailed prior to trading, selling privately or even having it appraised. A clean car will always bring more money.
2. If you have the time, patience and wherewithal, try to sell it privately.
3. If you cannot or do not want to sell it privately, take it to CarMax if possible. They offer a no-haggle, Guaranteed Buy Bid that is good for 7 days or 300 miles. If you do not have a CarMax in your area, try a local bank or credit union. Many times, they will give you a bid if you ask.
If you do not use one of the methods above, and still want to trade with the dealer, by all means do so. However, you should ALWAYS keep the trade negotiation separate from the vehicle purchase negotiation.
Similarly, you should do the same with the financing of your new purchase. Try to get a pre-approved loan or lease and compare their terms to those presented by the dealer.
Lastly, the AutoBidsOnline methodology already sets you up for this, but ALWAYS negotiate with the dealer as if you were going to pay cash. Compartmentalizing the Purchase Price, the value of your Trade and the terms of your Finance will go a long way to ensuring you get the best possible car deal!