If you are just testing the games to sell them, we do have a few other GTZers in Virginia. One of them might be close enough to meet up in person and let you test them.
https://gametz.com/?A=Users&bycountry=479&bystate=...Honestly though unless they are foreign DSi-enhanced (which are region locked), I would recommend testing them on 3DS, as many older bootlegs were able to be detected and are unplayable on 3DS. I say older, because I'm not sure if DS bootlegs got better and have workarounds now because I haven't received a bootleg ds game in a while. The last one I got was a Super Princess Peach, which did not work on a 3DS and I got a refund from ebay after telling the seller off (because apparently he had two for sale and the one in the picture was not the one he sent).