Brownells (and midway, and everybody else) are just selling WWG's product - hence the price is pretty universal everywhere.

Buy once, cry once. They're worth the cost, even just for a hunting rifle.

Get you a WWG "Happy Trigger" while you're at it. I suppose they're running ~$80 these days, but when I put mine in my rifles, they were the best $65ea I'd ever spent. The wolf spring kit and a reduced power (or simply 'bent' factory) trigger plunger spring will have that Marlin feeling like it was always meant to feel.