SS in the Washington DC/North VA NOVA/DMV area that carry MGM tabs/products?

What up peeps? Curious if anyone from the DMV (DC, MD and VA) pref NOVA around Fairfax or Loudoun county knows of any smokeshops that carry MGM products? Best bang for buck I've found is a SS in Ashburn that carries Kama 1000mg (7 + Pseudo) for $45 but looking for MGM as it's longer lasting. If anyone knows of any powders locally that would be tight as well! Thanks in advance!