Cheapest Twitter & FB accounts can start using in Jarvee IMMEDIATELY.

I have my own dedicated proxies; I'm looking for the 'cheapest' Twitter & FB accounts I can plug into Jarvee; start joining groups; start posting content etc.
How aged should they be?

I was looking @ 247accs.com but they have so many choices...

Your suggestions?

I am also interested in this!

Just to add; I have US dedicated proxies; need to also make sure I don't "lose" the accounts when switching over; I lost so many Facebook accounts before...