I bought from that seller about 1.5 months ago and arrived within 2 weeks.
Communication is very difficult since English isn't his main language. Took many back and forth emails before he gets what you mean. I even used Google Translate and emailed him in Polish.
Keep in mind, his listings are very misleading at times. Most parts are genuine like timing belt and water pump, which is what I got. But I also got rear brake pads and was listed as genuine on the site but was really OEM. Ask him for pictures just to clarify. Also don't buy on eBay only because if you "add to cart", it doesn't reduce the cost of shipping but rather just adds it on.
In hindsight, it's still pretty good value.