You can see a small set of helpful resources we use in our daily work at our References page.
Search for birth/marriage/death records usually involves checking records manually, but for some places we could sometimes find sources which are simplifying the matter substantially. I would like to once again emphasize on the knowledge of exact location because it was VERY frequent that the emigrants reported on their ship manifests not their exact city/village/schtetl of residence but rather some larger bigger place, frequently the center of region.
We usually start with providing you with the research proposal, which will include deliverables, timing and pricing. We will also give the cost estimate. If you agree, we ask you to pay 50% advance so we can start research, with the balance payable upon the delivery of research report.
It is important to clearly understand the location of the events: The vital records in Russian Empire were kept in handwritten books, which are rarely digitized and/or indexed, so in order to search successfully we need to be certain of the location of events (and have a clear idea how this location is documented).
For example, Rostov eparchy has today around 130 churches, and it was more than that in 1912, each with separate records. There are at least a dozen places called Martynowka in the modern day Ukraine, evenly spread around the whole country. There are 30+ German-inhabited places from Odessa to Saratov (1600 km apart) similarly named after Ekaterina the Great, who is thought to be the main sponsor of German immigration to Russia.