Atmega328p price supplied by Chengsuchuang
The ATMEGA328P-AU is an 8-bit microcontroller integrated circuit (IC) from Microchip Technology’s AVR® series, housed in a 32-TQFP surface-mount package. It features 32KB of flash program memory, 2KB of RAM, and 1KB of EEPROM, operating from a 1.8V to 5.5V voltage range. It is equipped with communication interfaces such as I²C, SPI, and UART/USART, 23 I/O ports, and an 8-channel, 10-bit ADC. It is widely used in the 3C digital industry.
Then,what’s the price?
Below is the quotation shared by cmxelcs.com

2500PCS/Standard package, unit:$1.50. Price is for refference only, different quantity, price may update at some times. Better to contact us to get a latest quotation. Atmega328p datasheet is here.