Bottomline I would order direct from Superior.
Glide I order direct from habdash because I have a resale cert and can place the minimum (I believe it is now up to $300 but because I order the magnaglide prewound bobbins in bulk it doesn't take long to get there, lasts forever though. I haven't ordered in over a year!) but retail sources for glide are
https://metroemb.com/store/index.php?route=common/home
https://kmquiltingsupply.net/product-category/thread/