Well...
Called Sig for some price/availability on clear dope. Lady on the phone said they're fresh out, not sure when they'll have it again.
Went to my closest hobby shop in Modesto (CA.) which is 40 miles away. They always have what I need, and are a Sig dealer...
They are out of Supercoat, Litecoat, and Nitrate clear. They had 3 qts. of thinner ($14.95) I bought 1, as the counterman said the price was going to double...and not going to have Sig dope in the near future.
They seem to be selling lots of R/C RTF planes & cars, as are most now.
Then I called my favorite store, J&M in San Carlos. (140 miles away) They have 1 gallon of Supercoat, $40. Tempting, but not at the mileage my hopped up '66 VW gets (22 mpg) Nix a 140 mile trip for clear dope!
Called Aircraft Spruce, (this was Thursday afternoon) ordered a quart of Randolph thinner and a quart of Randolph clear dope. Saturday morning, Fedex truck pulled up and delivered the package!
Great service, great prices. Randolph here from now on.