Buying a new iPad

A 10-1/2 year old, 2011 iPad 2 has no trade-in or resale value.

These old iPad models have been completely obsolete for the past few years!

Sorry.

Simply properly recycle this device.

You can get an estimate by going to Apple Trade In - Apple

If it has no value, you can recycle it.

If you don't have wi-fi and don't want to use a mobile device hotspot, you should consider a wi-fi + cellular iPad model rather than a wi-fi only model. See: iPad + Cellular - Apple

Regarding use of gift cards at the U.S. online Apple Store, see the following from Payment, Financing, Refunds and VAT - Shopping Help - Apple

Using more than one payment method

You can also combine payment methods to pay for your purchase. Choose from the following combinations of credit cards and gift cards:

• Credit card(s) - up to two
• Apple Gift Card(s) - up to eight
• Apple Gift Card(s) - up to eight + one credit card
• Apple Gift Card(s) - up to eight + Apple Account Balance
• Apple Gift Card(s) - up to eight + Apple Account Balance + one credit card
• Apple Account Balance + one credit card

Apple Gift Cards and Apple Account Balance cannot be used with Apple Pay, PayPal, or split credit card payments. Please note that you can use the value from all types and generations of Apple gift cards. For more details, see:

• How to use Apple Gift Cards and App Store & iTunes Gift Cards
• How to use Apple Store Gift Cards

During checkout, if you are paying with a gift card issued by a credit card company, you can combine it with one credit card.

Don't know. Apple's site says 8 as I posted. You may want to contact Sales support at 1-800-MY-APPLE.