ORIGINAL: gnd2
The cost can vary quite a bit depending on what you get. I don't think it's worth getting a blade 400 just to switch everything out though. I think it will end up costing more in the end.
I really have mixed feelings about eflite. As I said, my first heli was a blade CP. I think they're a good company that make some fun helis. The coaxial and fixed pitch helis are fun and good quality for what they are. But for CP, I feel like they're more of a ''get your feet wet'' kind of deal, if you stick with it before long you're going to want something better. So if you're sure you're going to continue in the hobby, in the long run it will be more economical to get something better up front and spend the time learning how to assemble, tune and fix it. If you're not sure and just want to ''play around'' or try it out before jumping in, the the B400 is an easy affordable way to try it out. That's how I look at it.
I was looking at the align 450 just because i thought it would cost more to upgrade all the electronics, but also i think im more in this hobby to just "play around"... since i heard this paramedic program is very hard. i wont have to much time to "take it serious" but i want something bigger in size and also a bit harder to fly than my MSR.. Thats y i was looking at the Blade SR, and blade 400 the most. and then also the blade 250 because they have it at my LHS too