How to see full bid history

Nope, not possible. TM only shows the last 10. You can go to bidbud which shows the last 20.

So i won my bid and hes saying he sold it for more on tm when there was no one else

Maybe they sold it OFF TM, rather than ON TM. Either way, you can't get blood from a stone so all you can do is lodge a dispute with Trademe via the Dispute Resolution button in your Items I won folder beside the auction. TM will email them to remind them of their obligations to sell. Most likely nothing more will happen. Might pay to blacklist the trader so you don't get caught by them again.

My ‘won auction’ history is blank. I have purchased serval things in the last 3 months. What do I do?

Sarah, all history disappears from Trademe after 45 days. Best thing is to refer back to your emails, although you can also ask Trademe for an account summary. See this help page for more info and a contact form.

Accessing your account history – Help - Trade Me

Its so frustrating not seeing full bid history while the auction is on. I want to see more than the last 10 bids. Then I can see the time when the first bid against me was set, and how many people have come and gone. Maybe it will give me an edge, maybe it won't. But there should be a full bid history visible. Why the heck would TM decide not to show full bid history?