Does anyone have experience of working with Russian kastomerami from Ukraine.

Question, Does anyone have experience of trading through the Internet from Ukraine to Russia?.
task.
Terms and conditions:.
- 300-400 sales per month.
- Selling price of 10-50 bucks.
- Unit weight - 100-300 grams.
Question:.
- Can not be too expensive to send a simple email from the Ukraine? .
- May make sense to collect the party, send to Moscow and from there to send mail?.

I would be grateful for the responses, it is possible to soap.