2006 Hyundai Matrix

Hello, I've been offering the car for about 3 weeks. Very often I was asked about the toothed belt. Unfortunately, there are no evidence or invoices. The car comes from a estate and I'm the second owner. There is a service book with inspections and the last HU has passed the car without defects. I took over the car before about 1,500km, but then noticed that the loading area is too short and I need a combination. According to the daughter of the previous owner, the car was regularly maintained at Wandscher in Wilhelmshaven. A friend of mine has looked at the belt and said he would look good. However, a change cannot be verified. And the air conditioning would have to be checked. I therefore decided to adjust the purchase price in a realistic framework. The car is in a well maintained condition, the engine runs well. The tyres are also fine.