Looking at a 2011 Rancher 4×4. Need some advice.

I’m looking at a 2011 Rancher 4×4 (TRX420FPA). I have read that the auto transmissions often have issues but this model has auto/manual option. Should I be concerned about this ATV having tranny issues? This will be my first ATV and I want to be sure it’s going to last without having frequent trips to the shop. I greatly appreciate any input.

The ATV has 50 hours (113 miles) and the man is asking for 5k. Is it worth it or should I go for a brand new ride?