Scrapebox and proxies

I'm using Scrapebox for harvesting urls with public proxies but I'm not satisfied with the speed so I decide to buy private or shared proxies. The question is will 10 private proxies work for me? Should I go for shared proxies? I saw 70 shared proxies for $22 at proxybonanza but I read that you are not allowed to use SB with them(i've sent them an email to be sure). Can you recommend other websites where I can buy good private/shared proxies? I've already found these - anonymous-proxies, squid proxies, proxy bonanza, your private proxy

How much you need to harvest? I don't think so you will go that far with 10 proxy.

Just ten proxy will be banned by Google so quickly.
I think you should not to buy 10 proxy because if 10 proxy will be enough for you - you will can use your home ip for this parsing and it'll be some slowly but free.

I'd use Unr3al's proxy service. He is a member here on the forum.

Private proxies are for posting comments not harvesting URLs. Go with http://www.blackhatworld.com/blackhat-seo/proxies-sale/175027-scrapebox-proxies-daily-lists.html

I will harvest only 1-2 hours daily or less.