Possible is probably not the correct word but how hard would it be to find someone that could create a program that can give out alerts when an arb is present between say Centrebet and Betfair, both Win and Plc markets?

Is it realistic to find someone to create something like this? And if so, how much do you think it could cost?

Thinking about it, it could be really quite difficult but I'm keen to get opinions. If it is possible I am after contacts of people who could definitely create a program to compare only up to 2 bookmakers to betfair lay prices. I don't want something that would place bets for me - it would purely be an alert system notifying race number and horse number.

Thanks for any help!