I need a desktop app for buying from ebay with immediately payment -- 2

Job ID: 31497303

Budget: $750 – $1,500 USD

I am using uBuyfirst to buy the items on ebay.
I hope some can develope a programme like it for buying from ebay with immediately payment (pay by credit card or paypal)
https://ubuyfirst.com/get-started/

Related categories: C Programming C# Programming PayPal API eBay