I realize this is a pretty old thread, but in case anyone is looking for feedback now on whether to buy a Saga P-Bass kit now, I would give a qualified "yes" answer.
I bought one of these kits in August of this year for $140 on Amazon and have been pretty happy with it. It's not great out-of-the-box, but it is definitely good enough for someone to put together and get reasonable results right away, and to learn how to do a good setup with.
Couple major points stick out in my mind about it though.
1. The neck is pretty nicely made out of rock maple and rosewood. It has a 2-way adjustable truss-rod that is accessible from the headstock side and which works well.
2. Fretwork is a C+ in workmanship and the fret quality is not fantastic. I wore noticeable grooves in the the upper frets using the strings that shipped with it. I replaced them with DR Lo-Riders in September and did a fret-leveling and polish job at that time as well. 2 months later I'm seeing noticeable fret wear again. My guess is that the fret material isn't very hard. Coming back to the workmanship, I had a 5th fret that was ridiculously proud of the others, and there were a couple others that were tall as well. It absolutely needs a fret-leveling before you try to do a setup.
3. The nut is a plastic abomination and it's action is way too high. That being said, it still manages to sound pretty good.
4. All of the metal hardware (Tuners, bridge, string retainer, etc) is of decent quality. It has a pretty thick chrome plating on it that isn't the best looking, but it works and the metal is of decent heft. My bass fell over one day and landed on a tuner key, which loosened the key and bent the shaft slightly. Not sure if this would have happened on a higher quality tuner.
5. The pots and electronics are decent, but not great. It comes with mini-pots, which I assume can be perfectly acceptable, but my tone pot has some static scratchiness to it which I assume is from carbon on the wiper. Seems suspect to me that I have a problem after only 3 months, but with electronic parts you could have crap the day you open the box. Volume and tone both work correctly though, so it that sense, it's a success.
6. The body... is crap. Let me elaborate on that. The shape is perfect P-Bass, no complaints on that. The neck pocket is overly loose though, which you can't really do anything about. The wood is some sort of junk that I can't identify. It might be basswood, but there is such a heavy coating of filler/sanding sealer on it that it's impossible to tell. And that filler cracks btw. Just FYI. About the only thing I'll say for the body is that it relics pretty well, as you you can rub through to the sealer and get a nice antique look. I'm not a fan though.
Overall, my verdict is that it makes for a great first kit, but I wouldn't by another one. Now that I know how one is put together and what sort of parts are decent, I think it makes more sense to spend slightly more and put together a higher quality instrument from better parts.
