Here is the list of genuine ptc sites which are paying up presently.
asianbux.com (minimum payout $1.50)
TuMoney - 1$ Payout
Occupex - 1$ Payout
BuxEast - Instant Payout 2$
PTCNation - Instant Payout 2$
Ultraclix - Only 2$ Payout
e-clicks - Instant Payout 2$
BuxInstant - Instant Payout 3.5$
ProfessionalBux - Instant Payout
FatcashCow - Instant Payout
Buxout - Instant Payout 5$
SandraClicks- $5 payout (standard), $2 payout (premium)
Always choose the ptc sites which has low payout but ptc sites wouldn't earn you more.