Just out of curiosity, I'm wondering if you could purchase an item off of eBay with
a credit card and WITH a debit card as well.

For instance, my max credit card purchase is 300$ but the item is 323$.
Can I pay the difference with the debit card?

 

You can but not thru ebay. You have to contact the seller directly, that is IF he's willing. A lot of sellers (and buyers) won't risk going out and be exposed to potential scams. Afterall, ebay does provide some buyer/seller protection but you have to abide by their terms/conditions.

Best way is to just use your credit AND your debit cards to deposit that amount onto your paypal account and use paypal to pay the seller (if the seller accepts paypal).

Or you can just buy money order from the post office. I'm sure they'll allow multiple forms of payment to pay for your m.o. purchase.

What are you up to, Ryan?