Really need your help ladies

Ok now, I have been eye'ing this bag for a real long time however I have been hesitant at blowing so much money. It is the exact color and style I want.
Thoughts on authenticity please. I went through her previous sales and they seem good but I don't trust my judgement
The other option is this other one, and as much as I want this bag I don't know about spending that much money.

I have been very good these last 5 months with no major purchases. I hardly call spending $100 on a Coach Indigo swing pack a major puchase because that was a steal!