Sure....
15g tank & iron stand $60
eheim 2213 $60
2 x 48w t5 Nova Extreme fixtures $125
ADA advance system 72 CO2 deluxe $200
ADA solenoid valve $75
ADA substrates $50
hydor eth heather $40
ADA drop checker $30
That's about $650 right there, but it doesn't need to be that high. There are cheaper alternatives to all the ADA products that work just as well (except for the soil, which is really great stuff), the in-line heater is a luxury, the eheim is overkill.
I also went and later spent cash upgrading both my bubble counter and diffuser, dropped about $200 on those two items. Entry level ADA versions were included with the CO2 system, though, so there wasn't any real need I just wanted to.
There's about $200 worth of livestock in the tank, counting both the fish and the plants.
On-going cost is electricity (not much), food, Co2 cans (about $11 every nine weeks). My initial fertilizer supply will likely last me for years.