I think I know why you aren't hearing from him. Using the evidence I've seen studying the photos. A straight clean used sidecar can bring $2K - $3K by itself. A clean (not running) Parts bike can bring $1100. easily. The Urals owner is probably a competent mechanic IF that is his racing Viper on the trailer. The Custom stuff he's done looks well executed & was Expensive. The red rims appear powder coated & were unlaced to do it. They don't really bother me & shouldn't rust. The paint for the most part will polish out like new. Ask about the cocked headlight & look carefully at the fork alignment in case there was an impact. (between you & me) the gathering revs problem is probably an easy fix. I THINK IT LOOKS LIKE A PRETTY NICE SOLID HONEST BIKE.
Here is my experience with my distressed Ural Buys: 6 years ago I bought a clean 1994 Parts Ural for $1100., & a clean sidecar for it for $2k. After refurbishing it, & enjoying it for some years, I eventually auctioned it on Ebay - it brought $5k. Last year I jumped on my 02 tourist for $3200. with the left jug in a box in the sidecar, it also had under 3000 miles, a Denso alternator, good fuel tap upgrades. It is fixed now & a very nice bike - much nicer than the old 650cc kick start model that sold for $5k.
I am pretty sure the Troyka you're looking at Blue books around $5k in 100% condition. I think if you should make an appointment to speak with the owner IN PERSON - EYE TO EYE, with $4500. spread out in different pockets. You may be able to work something out, possibly buying it for $3500-$4K. If you change your mind I think you can get your money back, but I'm certain your offer was to low & NOT IN PERSON. In the spring prices go up.
Best of luck to you, Craig
Current Motorcycles: 02 Ural Tourist, 2010 modified Royal Enfield G5 Deluxe.
"Be who you are & say what you feel. Those that matter won't mind, those that mind - don't matter."