Affordable EEG hardware for 32 channel EEG?

1. 16 / 32 Channel EEG Ads1299 EMG EEG Acquisition Module:

https://www.aliexpress.com/item/1005002553363982.html?spm=a2g0o.cart.0.0.21313c00EvgW1g&mp=1

Can it be delivered? Is there an example for users which demonstrates that it works, and which can be modified for user developement?

2. Hack EEG

https://www.crowdsupply.com/starcat/hackeeg/updates/hackeeg-32-channels-displaying-in-openbci

Is there an example which demonstrates that it works with 32 channels, which can be modified for user applications?

3. FreeEEG32

https://www.crowdsupply.com/neuroidss/freeeeg32#details-top

Hackster:

«NeuroIDSS is set to launch the company’s FreeEEG32 open source EEG ADC platform, which boasts 32-channel, 24-bit, sigma-delta, simultaneous sampling for scientists and hackers looking for research-grade equipment without the high costs.»

ship Feb 28, 2022.

4. ADS1299 Performance Demonstration Kit from Texas Instruments four boards daisy chain

Is there an example code available for this device?