SilencerShop used to be the place, but they have since lost some of the big manufacturers.
Capitol Armory is where I usually shop now.
Some of the local stores in DFW actually sell suppressors cheaper then online if you're willing to look.
Lot of misinformation going on SilencerShop explains the silencerco situation on their blog and have enough stock to keep selling them for several months. As for loosing several big manufacturers the only major brand I know of is the new company Dead Air and SilencerShop decided not to carry them for now.
Now for the not selling to people in Texas that is false also now they ship it to your local dealer. Customers benifit by not having to drive to Austin and the local shops benifit by getting buisness. The only people who would not benifit from that are people who lived within a 30 minute drive from the SilencerShop store, and other silencer dealers of course.