You don't state the specific model of Pro Ear... so I don't know what you mean by "expensive".
I currently use Peltor TacSport muffs, which run around $110 give or take. Pro Ear makes muffs in that price range... and substantially more.
I've used the Pro Ear Tekt 300 model, which are a little under $200, and found those to have a small "sound quality" advantage over less costly muffs.
Shoulder Drive Nicholson Club