Maintenance cost was a concern for me initially, but a few things helped me get over this.
1) I drove it.
2) I drove it.
3) I drove it!!! And its worth it!!!!
Along with this, I purchased the Nissan Maintenance+ program, which will cover all maintenance costs for the duration of the warranty. Aside from this, there is a LOT of mis-information out there; ie oil change at my local dealer is $180, NOT $600-800. Additionally, there are many after market tuners and shops that can provide service, maintenance, and upgrades at much more reasonable prices.
Here is a pic after the new car prep, then lowered, rims, and white winkers installed. Me thinks a perfect tandem with the X
_Tom