Dear sir/ma’am,
I have experiences with data entry as well as web scrapping as I have done similar jobs in the past (e.g. searching for description, images, and prices of specific products on Amazon or eBay and uploading them to a website). I can assure you that I will perform excellent quality of work and quick turnaround, you will not regret. I will start immediately and will finish this before the given deadline. I am looking forward to hearing from you.