I have tried proxy6 which offers a shared IPv4 proxy for 3 months for $1.41 , one IP, I only need one, and that pricing is fine for me.. But I need port 80 or 443 open.. and they don't offer that. One ...

I'm not entirely sure you can. The default web site properties won't let you deselect that port (it's not an option, IIRC). Try local port locking or on the firewall if you don't need it.