I don't know much about Bluetooth, but I would much rather use an extremely long

serial cable (which I do right now

). It is fast, reliable, and proven, unlike Bluetooth serial cables. I think it would be sweet to have such a technology in a perfect world, but not at the price of $70 an end, and certainly not at the cost of reliability and speed.
I don't have any suggestions as to where to go for these ends. I checked on Newegg (
http://www.newegg.com) and found one:
http://www.newegg.com/Product/Produc...82E16833139008
If you have a Bluetooth-enabled laptop, you probably only need one end, which would meet your budget constraints. If you feel like going through with this, make sure you post the results. There should be no problem with interference--the field runs on 900MHz, and Bluetooth is in the gigahertz range. Also, what about power? Bluetooth devices, I would think, draw a crazy amount of power, and whatever you can fit in that little device probably won't sustain that kind of draw for very long. The one I linked to uses a wall-wart--worse than the serial cable you want to replace.
I don't think that Bluetooth is exactly ideal for our uses. You can decide for yourself. Tell me what you think, and if you do go for it, post what you get.
JBot