Cost est for cheap multiplatform arcade on large TV

The Raspberry Pi 4 will emulate most systems now... it is pretty damn powerful. I'm only using a Pi3B+ for my arcade cab and a Pi2 would probably have been fine. I did however initially buy a Pi4 to use but found it wayy overkill, so I plan to use it like this in a NesPi Case and use on my 4k 75 inch TV with bluetooth controllers.

Cost Estimate

Item	Cost $NZ	Link	Cheaper Option	Cost $NZ
Raspberry Pi 4B, no case	$109	4GB version, Wavetech	Pi3 Wavetech	$89
USBC 3A Powersupply	$19	Wavetech
Retroflag NesPi case, Comes with fan, switches etc	$74	Retroflag	Amazon	$46
Controllers x2 (cheap bluetooth, or use PS3)	$23	$11.50 each Trademe
64GB SD card	$30		32GB SD Card	$15
HDMI Cable	$5
Software	All Free
TOTAL	$260			$197

Optional

Optional: SSD (not really needed, but case allows for one) 120GB $60
Optional: more controllers for 4 player games (eg simpsons)
Optional: wireless or bluetooth keyboard
Optional: Power supply in black or white

Cheaper option

Use a Raspberry Pi 3B+ $90 Wavetech
and NESPi case+ $46 Amazon

Optional other controllers

Other USB (or possibly bluetooth ones available?) arcade style controller such as:
-- Arcade stick (or DIY) https://www.trademe.co.nz/gaming/other/listing-3009112027.htm
-- 8BITDO COntroller https://www.trademe.co.nz/gaming/joysticks-gamepads/listing-3003664546.htm

Notes

Comparison https://batocera.org/compatibility.php
There are kits like canakit https://www.amazon.com/stores/CanaKit/page/19109D80-639C-40C8-9222-DC6775C304EE

Software Distributions

I'd recommend Batocera... it is all set to go for the Pi4 and Nespi case (takes care of the scripts for the on/off switches which is nice), otherwise Retropie. There are complete builds with ROMs available at places like arcadepunks.com