I am a colloector of proxy domains for my own proxy. Once one domain is compromised it switches to another one and I either sell off the other one at a loss (hoping that advertising made up the difference at elast) or just junk it and let it rot somewhere. With your situation, the 0 actually does not make it that much harder to pick up as "proxy" is just as much sought after as "pr0xy" by the filtering robots. If you want this to be a private proxy then you can use anti-SEO techniques to keep your page orphaned which is what is easiest, but don't expect much traffic
If you do want to make it public, coding starts to become an issue and it takes a lot of good code to prolong the time of use to discovery. Since you will be found anyway, the ease of remeberability andword of moth spread is much more valuable and that is where the 0 hurts you.
As a reseller it would not be worth anything aas they'd have a hard time making a profit. For an EU like me, i probably would not pay regfeee for it. In addition, anyone with 10 minutes can setup a proxy. There are many canned ones out there, but the value comes from eluding filters.
