Ebay best offers

Hello- I'm a regular lurker but infrequent poster here. I have never seen this topic. There is a PSA/DNA card on Ebay that I am interested in and I would like to offer a PSA graded card in trade as my best offer. Is this possible thru Ebay? Do I have any protection (the person listing has only 41 feedback) with a trade? I would appreciate any ideas or advice. Thanks. Dave
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Dodgers collection scans | Brett Butler registry | 1978 Dodgers - straight 9s, homie
wont ship until pmt clear type thing