taken from the paypal website
Discounts
Volume Discounts
We can offer you a lower rate when your monthly sales exceed $3,000 and you've been a PayPal member more than 90 days. Please fill out a one-time application, subject to approval.
Apply Now
YOUR MONTHLY SALES |
YOUR FEE PER TRANSACTION |
EXAMPLES |
$0 to $3,000 |
2.9% + $0.30 |
$3.20 fee on a $100 sale |
$3,000+ to $10,000 |
2.5% + $0.30 |
$2.80 fee on a $100 sale |
$10,000+ |
2.2% + $0.30 |
$2.50 fee on a $100 sale |
$100,000+ |
Call |
https://www.paypal.com/us/webapps/mpp/merchant-fees
I would assume that would work for all sales (ebay and non) once you have over $3000 a month you are eligible. Someone who has actually breached that threshold might help you out better than I though.