i wanna make bidding site

I want to make a bidding site
for example someone offer a thing and add a bid and other bid up and comment on the offer
but the problem is that i can only make wordpress sites as it is the only kind of sites which i made before

so is there any suggestion or hints or any link which may help?

 

I would check on google for a free script. I'm sure there are loads of them.

 

Try get a freelancer. Always people willing to do this for you there.