Rare titles and items need help with them

Hello all I'm new to this forum and would like the communities help on a few things that I'm selling on Ebay.

I am selling the following:

1. BOUNTY BOB STRIKES BACK ATARI 400/800 RARE COMPLETE SET with Mapped instructions.

2. Pitfall 2 II Game Atari 400/800 RARE and Original Comic

3. BC's Quest for Tires Atari 400/800 RARE and complete

4. CHOPLIFTER RARE FIND FOR THE ATARI 400/800

5. Computing Language BASIC Atari CXL4002 ATARI 400/800

6. Atari Explorer Magazine Summer 1985 - ST Graphics

7. Atari 400 Owners Guide Silver

How much are these worth specially the Bounty BOB Strikes back! How much can I sell them for in todays market?

I currently have all these on Ebay and would like to make sure I am getting what there worth or at least a fair deal. I have listed the links to each Ebay link in the order it is above. Thank you.

BOUNTY BOB STRIKES BACK ATARI 400/800 RARE COMPLETE SET - eBay (item 170372934070 end time Aug-23-09 16:25:43 PDT)

Pitfall 2 II Game Atari 400/800 RARE and Original Comic - eBay (item 170372925546 end time Aug-23-09 15:45:07 PDT)

CHOPLIFTER RARE FIND FOR THE ATARI 400/800 - eBay (item 170372937315 end time Aug-23-09 16:45:02 PDT)

Computing Language BASIC Atari CXL4002 ATARI 400/800 - eBay (item 170372931249 end time Aug-23-09 16:11:24 PDT)

Atari Explorer Magazine Summer 1985 - ST Graphics - eBay (item 170372917912 end time Aug-23-09 15:14:44 PDT)

Atari 400 Owners Guide Silver - eBay (item 170372913760 end time Aug-23-09 14:58:14 PDT)

Thank you all so very much,
Tony Dell

The Atari 400/800 choplifter is worth about $25 to $30

Bounty bob strikes back is really rare, boxed would probably be worth a couple of hundred dollars at least.

Not sure about the others

Thank you very much