2000 numbers ? really enormous amount of numbers for a verification services here. Your price also seems very cheaper.
Please add few more information to OP :
.I know people in my country who has tons of simcards so I think that 2k numbers is still small compared to others. His price is not cheap tho because I've seen some giving 0.05$ or 0.10$ for verifications.
Anyway, this could be a good service if someone is looking for a bulk purchase since you can provide it.
You may want to try posting in threads of those who need the verification because they don't really check out others threads.
Why they are not checking is because they just want to get details about what is the price for giving this service and even after taking some 1 or 2 verification they just dont reply others comment or leave that thread dead