Craigslist bot

Looking for a bot for craigslist to find merchandise within a certain criteria match it against a third party site and email when item fits criteria and third party match... I will also include a video. Max $500 USD however was offered this for as little as 70 USD a few months ago. Anxious to get this going. Please submit any software you have made similar to this and autoposts will be deleted immediately Thanks looking forward to making this happen...