you need 110 volt up stacker validator. ICT, Pyramid, Mars etc etc. I recommend mars personally. They are easy to rebuild and will last a long time. Can usually pick up a used one for around 100 on ebay or sometimes on here if people are selling some off. Whatever you buy make sure it comes with the harness.

Some companies have gone 12v, stern has not, they come with an extra power cable you have to run from the backbox to the coin door area, so from the factory they do not come wired for 110v at the coin door, is something you do yourself (very simple, requires running the cable and just plugging it in.)

http://www.twistedquarter.com/index.php?main_page=product_info&cPath=483_484&products_id=703

I order from twisted quarter for a lot of my arcade parts and never had an issue. Or if you want here is the same validator from marco specialties but for more money.

http://www.marcospecialties.com/pinball-parts/A6-15SCP-USD4-II

Also note i have never used an ICT validator, i always use Mars ones that i find for cheap on ebay and rebuild however new in box mars ones are usually in the 350-400 dollar range.

Yeah i have 500 count stackers in a few of my newer sterns.

Here is the cheapest refurb'd mars i have found so far.

https://www.vendingworld.com/mars-vn2511-bill-validator.php

$153 with the harness, and you can upgrade to a large 500 stacker for an extra $25, I would double check to make sure it comes with a 300 stacker if you dont upgrade to the 500 as it does not specify.

While i agree ad have those types on validators on most of my games, everyone might not care. Just in case here is a refurb'd one that takes 1 and 5's for 184 with the harness.

https://www.vendingworld.com/mars-vn2511-110-volt-1-5-bill-validator-flash-port.php