Amazon Asin Crawler/Scrapper PHP or Python - Multithread

We are looking for an advanced amazon asin crawler that can go to any department link like that, scrape the subcategory and increment the price from 30 to 9999, AND SAVE IT TO DATABASE, the speed should be up to 30.000 products per hour. The crawler should be very fast and work in multi-thread environment. We are looking just for programmer who already do that or play with amazon limitation. step1: go to http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dapparel&field-keywords= step2: go to Women Men Juniors Kids Baby Dresses Denim Luggage Shoes Accessories Brands Sales & Deals step3: search product by price from minnimum price to high$. Price will be incremented like : from 30$ to 30,1$+0.10 incrementing, till the next button not apear, if the next button is not present, reincrement pric from 30,1$ to 30,2$ , crawl, increment 30,2$ to 30,3$ step4: save asin to database. step5: crawl all asin collected from database and collect product informations : [login to view URL] step6: insert products information like title|price|colour|ProductCode|Description|Image3_url|Image3_url|Image3_url