MOS 6510 $8.99
MOS 6526 $4.99
MOS 6520 $22.99
MOS 901225 $9.99
MOS 901226 $9.99
MOS 901227 $9.99
MOS 6581 $18.99

US shipping would be $2.50 plus $0.10 per chip.

International shipping is $5.50 plus $0.70 per chip.

I am in the United States and will ship worldwide.