Need a program to scrape or crawl ebay links. Starting from this link:
[url removed, login to view]
Which is all sold books in the USA. App would visit each link, remembering where it left off at, so as to resume at a later time.
[url removed, login to view]:g:9H0AAOSwAL9UbvUy
Under "Item specifics" app would grab isbn, isbn 13, and sold price. Data would then be stored to a mysql db.
Often times a book can be sold 5, 10, or 100 times or more. Database need only track up to the last 10 sales of each book.
With the push of a button data would be exported from the database to a .csv file. If a given book had 10 sold listings worth of data, selling price would be averaged. If it sold once for $20 and once for $10, then the selling price average would be $15.
In this case exported data to the .csv would resemble:
1606419366,9781606419366,$[url removed, login to view]
Looking to have this completed asap, within 2 days if possible.