After checking out Best Buy, the lowest price I could find for an external DVD burner was about $239. Then on Ebay I saw some Pioneer drives for about $125. So then I wondered if any users here might have one for sale...or high recommendations on a particular drive.
It's nornally cheaper if you buy an internal drive and then buy an external case and put the drive in it. External cases are around $50-$75, and you can get the drives for around $100-$150.
Desire to have DVD burning capability finally drove me to upgrade from my old HP 8x EasyWriter CDRW to an 8x TDK DVD/CD burner. I paid around $275 or so - unit is very reliable - and, in addition to being speedy (relatively speaking) at burning DVD's, is like lightning in burning audio CD's.
I would not hesitate to recommend that drive - and it is an external unit. I've lots of experience with external drive enclosures, but have never used one to "externalize" an internal CD or DVD burner. I suppose that solution is also just as good if it saves you some $$$.
I'm totally with jsnkc here... be sure you got Oxford chip in ext. Firewire box and slip some burner in. It will even give you the option to easily swatch any IDE drive in the box afterwhile. A very good (and chearper still as reliable) alternative for one that travels and is looking for compactness.