I actually had exactly the opposite impression. I contacted OSS via private messages and email at least 10 times over the span of three weeks trying to get some work done. One of those times I got a reply asking for my zip code, which I provided. I never heard from them again.
About two months later, after I had already purchased Umnitza's and gotten the work done elsewhere, I get a reply to one of my original inquiries offering me a quote.
Seems like they have absolutely terrible communication. I'm sure they're busy, but that's no way to run a business. I strongly recommend buying Umnitza Predator Orion v2 LED rings (which cost about half the OSS price) and installing them yourself or getting a shop to do it. It costs less, and you won't spend months waiting for an answer that doesn't actually answer anything.