Lowest Value offered

Hi , I contacted we buy cars to find the estimate for my BMW X3 2013 model ,which on their website was showing as R 277,200-R342,600 (https://www.webuyyourcar.co.za/valuation/GB67wtR85fw). I was asked to bring my car for inspection which I did and took it to there office in 208 Bram Fischer Drive,Randburg. Next monday I got the offer from we buy cars which was R210k ,way lesser than the value they estimated(R 277,200-R342,600) online and also the offers that I get from other dealership(Max. offer I have is R260k) on same car within 2-3 days. I think people must try the dealership before going to we buy cars for selling the cars if they trying to do trade in.

Thanks