Need Domain buying/selling/trading/parking/ website

I am looking to have a website either built or a very good script with all bugs fixed where I (and others) can post their domains for sale or trade them or park them (for revenue from paid per clicks) or where I can even add a section where I can lease them as well. I would like for there to be a sign or mark or the domain is highlighted etc to state weather it is just a domain for sale or a domain and website for sale. I would like for it to be easy to navigate function well and look great. I need to be able to customize this by adding the lease section and be able to control many many functions in the admin with changing price and people can use paypal to buy/lease the domain. I have many domains personally and need this done very professionally. I see the domain script domain trader here: [login to view URL] but want this customized to add the lease section as well. If you are going to use a script, I need you to tell me what script you are going to use so that I like what it looks like before I award the project.