Long range RFID is pretty much 900Mhz (ish). To get the chip to work at ultra low power levels it has to be pretty small. We are not talking Intel top of the line foundry but 90nm or better. Bottom line, no way to print that chip.
As for the antenna - you can print that but the variations in printing (like 1/64 of an inch makes attaching chips more expensive. The attach costs they are targeting is .25 of a cent per antenna. To achieve these numbers speed is king.
Also, for maximum performance (best antenna tuning) ink technologies don't work so well. I believe most are chemically etched now.
So you can expect the cheapest RFID tags to be around 10 c. Bigger ones cost more (but can be read farther away).