I found this on yoycart whilst looking for something else recently: https://www.yoycart.com/Product/539345986855/


hugo19941994 from the Retro Game Boards mentioned it looked like it was using the wireless module mentioned in this NFG thread, the NRF24L01+ by Nordic Semiconductors.

The description mentions that you have to solder your own bumper buttons which doesn't seem like too much hassle. Current price is $ 54.30 shipped. Just wondering if anybody has one or has come across any impressions? Hopefully, the Retro-bit releases deliver but might be something to explore if those pads aren't up to scratch perhaps.

Edit: wrong credit, NFGgames thread