Mate i had the same situation over here when i started out, i didnt even bother looking in to what other windys where charging local to me. I read a good few posts on what windys were charging in england and it was in around £1 per opening give or take a few pence, so thats what i decided to do too, so went knocking doors and was picking up 3 bed semis for around the £12 mark and no one battered an eyelid. A while down the line i found out that the going rate was £6-7 mark, still have most of them custys 3 years later. Charge about £10-13 now for new custys i pick up now depending on frequency(3 bed simis). But would def advise to keep ur prices high because you will be sure to get it. In my experience low pricing is just a bad mind set to be in.
Wayne