This is a very common question i get asked a lot. It is very important to understand that every build is unique in its own way.... And with that in mind, there are many factors that come into play when its comes to pricing.
Cabinets, hardware, sd card sizes and PC Hardware/Specs not only affects performance and determines what games can be played; it also drastically changes the time and cost it needs to be done.
The best way i can explain it is to compare it to featured builds that have been seen on my youtube channel. Below you will see several builds, what hardware and specs of that build along with cost to ship.

Lets talk cabinets - As of 2021 i started cutting my own cabinets using laminated birch 3/4 wood. Previously i used GameroomSolutions as my main source for cabinets, but with the request for custom sizes and designs i moved on and now cut my own cabs in my garage; This introduced my popular ByVic Cab Design and other cabs such as the Vertical Cab. Laminated Birch is not only more durable, lighter and sturdier... but its also more expensive vs MDF that GameroomSolutions Uses, not to mention additional cost to run the cnc and such. Below is pricing estimates based on a ByVic 4 player cab

Base Cabinet alone with 4 player Control Panel (NO HARDWARE/CONTROLS or Artwork) = $2400

Complete Builds:
Pandora Box Build = $3400
PC Based Systems = Starts at $5k

For a Lower Price Option / On a budget i would recommend a GRS Cab
A 4 Player Pedestal would cost the same as a ByVic 4 Player Cab as it takes the same amount of wood to cut

Shipping also has been a very big question - you will also see the cost of shipping that specific build. Shipping pricing is exactly what the freight company quotes.