Nope. Far too expensive, especially if you shoot a lot because they require you to buy all your ammo there. They can claim it's the county's rule all they want, the prices they charge are outrageous.
Gilbert's is fine for someone who puts a box or two of ammo through a gun once a month, or someone who has far more disposable income than time.
NRA Range in Fairfax is farther away but it's got better light, better air, a longer range than can take anything up to .460 Weatherby Magnum, and has range staff actually watching the line to make sure nothing unsafe happens. The very few times I've been to Gilbert's in Rockville I've been muzzled by other shooters who couldn't understand why I got so upset. Once I was even muzzled by one of the Gilbert's staff people on the range.
I feel the same way. I shoot at The Range in Stafford. No membership fees, $8 per half hour and you can bring your own ammo and targets. Their only stipulation is that you have to buy their ammo if you rent their guns which I can understand.