The accident rate on a 185 is due to how it's implemented. Most are used as bush planes in places like Alaska where flying conditions are far different than they are in say Texas or maryland. Due to their ability to carry a load, ease of handling and rugged design they are very popular in these missions. These uses often lead to accidents. Coupled with bad weather, rough terrain etc. it's no wonder they have a higher accident rate in these extreme situations ( if in fact they really do) many times they are overloaded and attempt to fly out of very short fields. The reason both the 180 and the 185 were and are so popular is because they are very stable, have lots of power and are NOT difficult to fly. I would be much more worried about its history, .....been on floats? Left outside a lot? Damage history? Log books? I would have someone very familiar with them go over it.....not one known to the seller. However, if your afraid of it, stay out of it!