Franco Industrial Paint Supply on Franklin Boulevard in Gastonia does carry an incredible line up of detailing products - basically almost the entire Meguiars, Duragloss, and 3M lines of product. If you are interested in picking these items up without having to wait for internet delivery, it might make it worth the drive to Gastonia.
The owner/proprietor is as nice as he can be - but he is philosophically opposed to using the internet or even a computer. For this reason, he apparently gets all of his info about Meg's, Duragloss and 3M from catalogues.
He carries almost the entire line of Duragloss products - but not TPP 105. I've been trying to convince him to order it - telling him that it is getting great word of mouth and is supposed to be Duragloss's top of the line sealant now (better than 111). He just looks it up in the Duragloss catalogue (which, if it is anything like the Duragloss web site, is probably vague as hell) and tells me dismissively that 105 is the Duragloss "car and truck polish". I think he distrusts word of mouth feedback from the internet.
Some others have posted here on Autopia that they have spoken with folks at DG and they themselves are declaring 105 as the best sealant they have ever made.
If any of you happen to drop by Franco's, please mention to the owner that you are interested in Duragloss 105 Total Performance Polish. Maybe is someone else besides me tells him what a great product it is, he will start carrying it. It doesn't seem that it would be in his own best interest to carry DG 101, 111, AquaWax, and PBA and not carry Duragloss's flagship sealant, 105.