I think the prices are good for authentic parts: https://www.bgmicro.com/9Z1509.aspx limit 10 per order Your Price: $7.99 Quantity in Stock 275 BG Part Number: 9Z1509 RCA COSMAC CDP1802ACE Low power CMOS Microprocessor Introduced by RCA back in 1976 and yet it still continues to have a very loyal following. Used in spacecrafts and in many space science programs. https://www.bgmicro.com/1B1661.aspx Your Price: $1.19 BG Part Number: 1B1661 National Semiconductor MM5486N LED Display Driver. TTL compatible. For individual LEDs, 7 segment displays, or even for relays. 40 Pin Dip. Serial I/O. Very useful and were very popular back in the mid 80's. 33 outputs that will sink 15 ma. Versatile and easy to use. Optimized for common anode. With a brightness control. [it is essentially a 33 bit shift register with current-adjustable outputs via one pin to a resistor. It cascades too!] cheers! Jeff Jonas