Action wrenches are usually specific to a make/model of firearm. So it's hard to make a recommendation without knowing what you want to do. But there are also things like the Power Custom version which use a basic frame and then has "inserts" for specific models [Rem 700 vs Mauser vs Win 70, etc.] I like this model because it can be used either as an action wrench or barrel vise depending on which inserts you use. You can even get an insert for S&W revolver frames. You can check it out at Midway USA's site https://ads.midwayusa.com/product/558055/power-custom-action-wrench-barrel-vise and probably other places as well.
As for "breaking the bank" that always depends on your bank. But I'm sure that most people here at INGO would advise against using anything but the best your budget will allow. Discount tooling has a way of producing more aggravation than results. And given the price of guns these days even little slips and dings can get expensive.