I do not recommend it. Recently, the service has been very poor, the declarants are rude, the documents are made with mistakes, often you have to come back to have them redone correctly. There were cases when employees were drunk at the workplace.
The documents went to the customs quickly. The site is large, asphalt. There is no exchanger, the nearest one is in Ostrovets. Upon arrival, you need to have Belarusian money (you can pay in cash), or to a Belarusian card. Foreign or foreign, as well as strange cards are 95 percent not accepted.
A normal broker, if they are not loaded, then they do the documents quite quickly, but it happens that you can expect for several hours, parking is free.